Question

Static, sliding and rolling are types of friction.

When the only force acting on a falling object is gravity, the object is said to be
a. stationary.
b. decelerating.
c. in free fall.
d. a projectile.

Answer 1

C) When the only force acting upon it is gravity, it is indeed in freefall 

Answer 2

That description is a definition of 'free fall'.

The first sentence, telling us all about friction, is interesting
information, but it has nothing to do with the actual question.