Question

Which is a feature of an effective letter to the editor?

A. a specific request for employment, or a job referral

B. informal language to set a casual mood

C. an argument supported by examples or personal experiences

D. an announcement of an event or contest

Answer 1

I'm thinking either A or C but..
I'd go for C.
Was there a passage that came with this? 

Answer 2

i think the answer is C