Section 107.49 is the preflight list the remote pilot in command completes before flight: the operating environment, a briefing of everyone directly participating, working control links, enough power for the intended time, a secure payload, and a Subpart D category check when the flight will go over people. Remote ID compliance is a separate Part 89 duty. The assigned questions do not treat that broadcast as one of the §107.49 items.
The rule
Paragraph (a) is the site. The remote pilot assesses the operating environment, considering risks to persons and property in the immediate vicinity both on the surface and in the air. That assessment must include local weather conditions, local airspace and any flight restrictions, the location of persons and property on the surface, and other ground hazards. AC 107-2A paragraph 7.3 ties the same preflight duty to inspecting the small unmanned aircraft system for damage or malfunction before each flight. The NOTAM page is where flight restrictions in that assessment are read. Weather products belong in the same pass.
Paragraph (b) is the crew. All persons directly participating are informed about the operating conditions, emergency procedures, contingency procedures, roles and responsibilities, and potential hazards. Paragraph (c) is the link: all control links between the ground control station and the aircraft are working properly. Paragraph (d) applies if the aircraft is powered, which a typical small unmanned aircraft is. There must be enough available power for the system to operate for the intended operational time. AC 107-2A paragraph 7.3.4 calls for checking power and battery levels for both the aircraft and the control station. Paragraph (e) requires that any object attached or carried is secure and does not adversely affect flight characteristics or controllability. Paragraph (f) applies only when the operation will be conducted over human beings under Subpart D. The remote pilot then ensures the aircraft meets §107.110, §107.120(a), §107.130(a), or §107.140, as applicable.
A certificated mechanic's signature is not on this list. An annual inspection is not on this list. Filing a flight plan with the nearest ATC facility is not on this list. Having the visual observer independently re-inspect the aircraft is not on this list.
How to apply it
Walk the six paragraphs in order so a finished camera check does not hide a missing one. Look at the sky and the forecast, then the airspace and any restriction along the route. Mark people, vehicles, and property you could hit. Look for wires, towers, and other ground hazards you could fly into. Brief anyone who is part of the operation, including a visual observer, on conditions, emergencies, roles, and hazards. Exercise the control link. Confirm power for the time you actually intend to fly, including the return, not for a shorter flight you hope to finish early. Tug the payload. If people will be overflown under Subpart D, match the aircraft to that category before launch.
Part 89 still applies when the aircraft must broadcast or fly where Remote ID allows. Confirm it because Part 89 says so. When a question asks what §107.49 still requires after Remote ID is already done, answer from the six paragraphs. The safe-condition check in §107.15 sits beside this list and is explained on condition for safe operation.
A bridge inspection that is one item short
You are remote pilot for a bridge inspection with one visual observer. The route will not pass over people, so paragraph (f) is not in play. You have assessed the operating environment, briefed the observer, checked the control link, and secured the payload. You have separately confirmed Remote ID. The action §107.49 still requires is enough available power for the intended operational time. Sending the observer back for a second inspection, or filing a flight plan with ATC, does not fill paragraph (d).
On a different morning the only open question is the link. The aircraft powers up and the app shows a picture, but the sticks do not move the controls. Paragraph (c) is not met. A mechanic's logbook signature from last season does not make the link work today. If the flight later adds people underneath and you intend to use a category, paragraph (f) joins the list. Until then, do not invent it.
The trap
The short rule item offers a mechanic's signature or an annual inspection as the required preflight action. The required action among those choices is the working control link. The site item offers "only the battery percentage," or a claim that a written weather briefing is prohibited. Section 107.49(a) names weather, airspace and flight restrictions, persons and property, and other ground hazards. Power is paragraph (d), not a replacement for the site.
The bridge item is built so Remote ID looks like the missing line. The stem says Remote ID is already confirmed, and the explanation keeps it off the §107.49 answer. The missing piece is power for the intended operational time. An observer re-inspection, an ATC flight plan, and an FAA preflight report are not that requirement. Mixing the Part 89 broadcast into paragraph (a) is how that item is missed.
Use the free practice test to recite the six paragraphs from a stem that has already completed five of them. The course teaches the list in the same order as the regulation.