Question

if a substance has a fixed volume (meaning takes up a specific amount of space) but not a fixed shape (meaning it can fill the container) it must be a
solid
liquid
gas

Explanation:

Liquids have a fixed volume as the molecules are close - packed enough to resist further compression, but they can flow and take the shape of their container as the molecules can move past one another. Solids have a fixed shape and volume, and gases have neither a fixed shape nor a fixed volume as they expand to fill the container.

Answer:

B. liquid