Question

On which of the following objects will Earth exert a greater gravitational pull than on a pencil? A.A toothpick B.A piece of paper C.A paper clip D.A stapler

Answer 1

What you're really asking is:

"Which of these objects is heavier than a pencil ?"

The stapler is.

Answer 2

Gravity will always affect the object the most with the greater mass. So a stapler has a greater mass than all the other objects given. I would then assume that the correct answer is D.