Answer:
The correct option is D
Step-by-step explanation:
To find the solution of this problem firstly we will find the probability that some one is in the brass section and play trombone.
We will multiply the probability that a member is in the brass section which is 0.50 with the probability that a member plays trombone, given that he or she is in the brass section which is 0.36
= 0.50 * 0.36
=0.18
Therefore the probability that a randomly selected band member is in the brass section and plays trumpet is 0.18
Thus the correct option is D....
