Drivers who can only react to one situation at a time are said to have

Drivers who can only react to one situation at a time are said to have single reaction abilities.

Explanation:

When people is driving they receive a lot of information that have to be processed quickly and it changes really fast and the ability to answer in a proper way depends on how fast they perceive something and respond to it.

There is certain people that can only answer to one situation at a time and their driving performance can be affected because they take a long time to perceive something which impacts their reaction time. This people is said to have single reaction abilities.

i think the answer would be b hope this