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.
Answer:
The step would be acceptable because a person who is severely depressed cannot physically realize that life goes on. The chemicals in their brain don't process that there are other ways to feel better besides dying.
Most people that try to kill themselves don't actually want to die, as recent studies show, but feel like death is their only way out at that point. But death isn't the only way out, which is why interference is usually very helpful and of course life saving.
(B) The unequal heating of earth’s surface by the sun.
Answer:
if your disabled if you're poor and not a high school graduate
