Solution:The above statement is true.
When a balloon is inflated, then the air inside the balloon expands. When we fill the air in the deflated balloon, the number of molecules of air increases inside a balloon. So, more molecules start colliding with the walls. This, in turn, raises the air pressure on the walls, and the balloon expands and gets inflated. When air expands, it puts pressure on or pushes the wall of the balloon, thus increasing the size of the balloon.