In an introductory psychology class with n = 50 students, there are 9 freshman males, 15 freshman females, 8 s

In an introductory psychology class with n = 50 students, there are 9 freshman males, 15 freshman females, 8 sophomore males, 12 sophomore females, and 6 junior females. If one student is randomly selected from this class, what is the probability of getting a sophomore?
a. 8/14
b. 12/20
c. 20/44
d. 20/50

number of favourable outcomes (picking a sophomore) / total number of possible outcomes (picking any student including sophomores)

8+12/50 = 20/50 which technically should be cancelled down to 2/5

There are a total of 20 sophomores (8 male and 12 female) and 50 people in the class, so if a student is selected at random the probability of getting a sophomore is 20/50.