Question

your answer is required.
single choice
you are driving too slowly if
you drive at speeds less than 40 miles per hour on a two - lane highway
you drive at speeds less than the posted speed limit
you block other vehicles moving at normal safe speeds

Explanation:

Driving too slowly is not just about a specific speed number like 40 mph or being below the posted speed limit. The key concept is impeding the flow of traffic. If a driver blocks other vehicles that are moving at normal safe speeds (which can vary based on road conditions, traffic flow etc. and not just a fixed speed limit number), then that driver is driving too slowly. For example, on a multi - lane highway during heavy traffic, the “normal safe speed” might be lower than the posted speed limit, but if a driver is so slow that they cause a backup of vehicles trying to move at that lower but normal safe speed for the traffic situation, they are driving too slowly.

Answer:

You block other vehicles moving at normal safe speeds.