A. 32
B. 67
C. 91
D. 80

Solution

C. 91

Explanation

The output of this function can be any value which is a multiple of 10, plus 1. Hence a value like 11, 21, 31, 41…91 can be the output. Also, the value should necessarily be between 1 and 100. The only option which satisfies this criteria is 91.