Ireally need , when dealing with research what does ethical concern mean?

An ethical concern is a problem that requires someone to choose between alternatives to label something as "right" or "wrong", hence the ethical part.

So, I assume that ethical concern, regarding research, is when you must label different sources as obtaining proper information, or if it's incorrect(?). 

I'm only guessing here, sorry, but that's the best I have.

Ethics mean right and wrong. So ethical concern would mean whether what the research you were doing would be considered ok or not

Bewhrfwegfbhfbrubgrgrw rgwr