Question

a guide for selecting the best driving speed is to *
be the lead driver in a group of cars.
drive slower than the speed limit.
drive five over the speed limit.
drive with the flow of traffic.

Explanation:

Driving with the flow of traffic helps maintain a smooth - moving traffic pattern and is generally safer. Being the lead driver doesn't necessarily mean the best speed. Driving slower than the speed limit can cause traffic congestion and may be dangerous in some situations. Driving over the speed limit is illegal and dangerous.

Answer:

drive with the flow of traffic.