Answer the following question given this paragraph: 

Crystalline solids have particles that are arranged in a regular repeating pattern. They form crystals. Amorphous solids have particles that are arranged more-or-less at random. They do not form crystals.


Q: What kind of solids have particles that are arranged in a regular repeating pattern?

 Choices:

- carbon-based solids

- salts

- metabolic solids

- crystalline solids

A:
crystalline solids
