Acolonist that sided with the british was known as a _
patriot
traitor
mercenary
loyalist

A colonist that sided with the British was known as a Loyalist.

Option D

Explanation:

During the American War against the British Empire, many colonies tried to please the crown and stayed loyal to them in the War. They were known as Loyalists. Many of them fought for the crown against the other colonies but this number was less than the expected number as the Crown failed to protect them.

These loyalists believed it to be morally wrong to oppose or do rebellion against the crown. Many of them had family or business links with Britain which made them support Crown and stand against the other colonies in the War.

the answer is definitley b!