Answer the following question given this paragraph: 

Hydrocarbons may form straight chains, branched chains, or rings. Ring-shaped hydrocarbons are called cyclic hydrocarbons.


Q: What are ring-shaped hydrocarbons called?

 Choices:

- reverse hydrocarbons

- curved hydrocarbons

- cylindrical hydrocarbons

- cyclic hydrocarbons

A:
cyclic hydrocarbons
