Answer the following question given this paragraph: 

An alkane is a hydrocarbon in which there are only single covalent bonds. The simplest alkane is methane, with the molecular formula CH 4 . The carbon is the central atom and makes four single covalent bonds to hydrogen atoms.


Q: What is a hydrocarbon in which there are only single covalent bonds?

 Choices:

- combined

- proline

- fullerene

- alkane

A:
alkane
