This is a bit of a trick question! It's not that objects themselves increase when gravitational force decreases. Instead, it's about the effects of gravity on those objects.

Here's why:

* Distance: The further apart two objects are, the weaker the gravitational force between them. So, distance increases when gravitational force decreases.

* Potential Energy: When gravitational force decreases, an object's gravitational potential energy increases. Think of it like this: if you lift an object higher against gravity, it gains potential energy. As gravity weakens, it takes less effort to lift the object, resulting in a higher potential energy.

Important Note: The objects themselves don't physically get bigger. It's the space between them (distance) and their energy relative to each other that changes.