Question

when you see this sign, you must: stop completely, check for pedestrians, and cross traffic; slow down without coming to a complete stop; stop completely and wait for a green light; slow down and check for traffic

Explanation:

The red octagon sign is a stop sign. According to traffic rules, when encountering a stop sign, drivers must come to a complete halt. This allows them to check for pedestrians and cross - traffic to ensure safety before proceeding. While waiting for a green light is part of traffic signal compliance (not directly related to the stop sign itself in all cases, but stopping completely is the core requirement). Slowing down without stopping or just slowing down to check (as opposed to a complete stop) does not fulfill the obligation of a stop sign.

Answer:

Stop completely, check for pedestrians, and cross traffic.