A yield sign indicates that you must slow down and __________ if a vehicle or pedestrian with the right-of-way is approaching.

A yield sign requires drivers to slow down and be prepared to come to a complete stop if necessary. The fundamental purpose of a yield sign is to give the right-of-way to other vehicles or pedestrians that may be crossing your path. By being prepared to stop, a driver can ensure their own safety as well as the safety of others on the road. This is essential in preventing collisions and maintaining smooth traffic flow, especially at intersections or when merging with other traffic.

The other options do not reflect the necessary actions required by a yield sign. Simply turning right or merging into another lane does not address the need to give the right-of-way to approaching traffic. Speeding up can create dangerous situations, as it contradicts the principle of yielding and can increase the likelihood of accidents. Being prepared to stop is the safest and most responsible choice when encountering a yield sign.