21. Which of the following is a common cause of collisions?

A. Driving the speed limit
B. Using a cell phone while driving
C. Following right-of-way rules
D. Signaling 100 feet before a turn



Answer :

Final answer:

Using a cell phone while driving is a common cause of collisions due to distracted driving.


Explanation:

Using a cell phone while driving is a common cause of collisions as it distracts the driver from focusing on the road, leading to accidents.

According to statistics, drivers spend a significant percentage of their time behind the wheel distracted by activities like texting.

Distracted driving, such as using a cell phone, significantly increases the risk of motor vehicle crashes due to the driver's attention being diverted from the road.


Learn more about Distracted driving here:

https://brainly.com/question/36498114