a. What is conditional probability? Select the correct answer below.

A.

The conditional probability of an event is the probability that both events occur.

B.

The conditional probability of an event is the probability that one event occurs, under the assumption that another event occurs.

C.

The conditional probability of an event is the probability that either event occurs, but not both.

D.

The conditional probability of an event is the probability that either event occurs, divided by the probability of the given event.