It is true that drugs need to go through a series of research studies and trials to ensure safety and efficacy.
This is a true statement. Carbohydrates are mainly used in our body and is essential to life.
I think it’s D. Observant
If it’s wrong I’m sorry-
Well, there are those medications on TV on ads, where they ALWAYS have these "side-effects", and the MAJORITY of them include heart-pain.
I hope I helped! :-)