Answer:
CRUMPLED PAPER
Explanation:
sure enough, the crumpled paper falls faster.
For objects on the surface (or close to the surface) of the earth, gravitational acceleration will always remain the same, regardless of shape.
Why does the crumpled paper fall faster though? Well, that's because there is also air resistance acting on these two objects. A flatter piece of paper invites more air to push against it, while the crumpled sheet is does not.
All this says, however, is that they fall at different speeds due to the different magnitudes of air resistance acting on them. Not due to "lesser" gravitational acceleration.