Which of the following describes a protected turn?
a) a barrier separates turning traffic from oncoming traffic
b) a police officer is in duty to prevent crashes
c) cross traffic is stopped with a red light
d) cross traffic and incoming traffic are stopped with a red light

Option:(A)-

"A protected turn has a barrier separates turning traffic from oncoming traffic."

Explanation:

In order to have a more safe and protected form of traffic, the traffic rules and signs are well set by the authorities. As for that reason any incoming traffic which intentions are to turn are provided by an extra lane, along with a given sign which separates it from all the rest of the traffic on the road.

While it is more common these days that each lane, and traffic is dealt well by providing more information and signs to all of them. As it will make traveling more secure then ever.

81 is a composite number.