I believe your answer would be B forgive me if im wrong
I Think the Answer
is D...Hopes this Helps <span />
The answer is D
Explanation:
I apologise for the late answer, but D would be the best one, as it does not discuss morality or anything differing from person to person. The effect it has on birds however, can be readily studied using the scientific method.
The human body uses amino acids to produce protein
essential amino acids are obtain by food
