Give the most space to ___*

A. the largest vehicle

B. the fastest road user

C. a potential drunk driver

D. the biggest hazard

the biggest hazard

(D) The biggest hazard

Explanation:

The safest option is to give the most space to the biggest hazard

This is because if the car is being unsafe then you are out of the way from harm. The largest vehicle, the fastest road user of a potential drunk driver may not be a big hazard.

If you know someone is being unsafe on the road and you can see it, then you need to back off or speed up, and not be next to or around them.