a. 0.126
b. 0.313
c. 0.220
d. 0.688

Answer: I felt so dumb when I realized I was reading it wrong.
The answer is 0.688
The question is asking... out of all the people who liked sweet mint were adults. meaning 5+11=16-> Total 5-> kids 11-Adults
11/16=0.6875 rounded = 0.688