Answer the following question given this paragraph: 

A colloid is a homogeneous mixture with medium-sized particles. Examples include homogenized milk and gelatin. The particles of a colloid are large enough to reflect light, so you can see them. But they are too small to settle or filter out of the mixture.


Q: A colloid is a homogeneous mixture with medium-sized what?

 Choices:

- atoms

- solutions

- molecules

- particles

A:
particles
