Answer :
Final answer:
You must come to a complete stop at a stop sign and at a red traffic light. Merging onto a highway or at a yield sign may require stopping based on traffic conditions. Thus option (a) At a stop sign and (b) At a red traffic light are correct.
Explanation:
The question pertains to traffic rules and the moments one must come to a complete stop before proceeding. The options given include scenarios at a stop sign, a red traffic light, when merging onto a highway, and at a yield sign.
It is mandatory to come to a complete stop:
- At a stop sign.
- At a red traffic light.
When merging onto a highway or at a yield sign, a complete stop is not always necessary unless the traffic conditions demand it for safety.
