What is the purpose of an eyewitness account?
a.) to persuade
b.) to tell a story
c.) to promote a view
d.) to give instructions

The main purpose of an eyewitness account is letter B. To tell a story

An eyewitness is a person that has actually seen an act or occurrence. Thus, he can better give a firsthand account of the happening. He is then capable of telling a genuine version of the story because he has personally seen everything that has happened. 

The rest of the choices are simply not the best answers. 

The answer is b) your welcome

Isay answer a hope this !