Answer:
definite shape.
Step-by-step explanation:
This is one of those questions where
1. It depends on what you have been told.
2. it depends on what the marker thinks the answer is.
As long as a substance is above absolute zero, there is some movement at the atom level. It may not be much, and it may be very confined, but the particles do move. That is the second best answer, and very possibly right.
I think your best answer is that solids have a definite shape. When you consider gasses and liquids, they have no definite shape at all. A liquid will take on the shape of the container it is in. So will gasses.
Only solids have a definite shape.. I would pick that, but don't be surprised if it is not right.