Answer
B. 4/5
Step-by-step explanation
Since Clarissa has 20 DVDs, it is safe to assume that the denominator will be 20 since that is the complete total.
She also owns 16 comedy movies which is the numerator.
So far, the fraction we have is 16/20
Now reduce that number into simplest terms
16/4 = 4
20/4 = 5
4/5