What does it mean if the probability is 20% that a spinner will stop in a red section? (i think it's c.)

a. if the spinner is spun 100 times it is certain that it will stop in the red section exactly 20 times.
b. it is 20 times more likely that the spinner will stop in a red section than any other section.
c. there is one chance in 5 that the spinner will stop in a red section.
d. there is one chance in 20 that the spinner will stop in a red section.