Answer:
C
Explanation:
FITT stands for frequency, intensity, type, and time. This principle is used to figure out, in physical education, how much exercise should be needed for a person.
Because you yourself know you're going to tickle yourself so it's no surprise so you don't feel that tickling sensation
I am not really sure of this answer, but i think its 9. But i am not 100% sure. Take my answer wisely.
A. Heart
(when you see "cardio",think heart)
