In a research study, one set of subjects received a treatment and another set of subjects received a placebo. This research study is an example of a(n):

it´s related to his charming character.

beauty is not everything, although we can joke that girls only care about the physical or material aspect, the truth is that a real woman looks at more important things, besides intelligence and personality, there are other attitudes that make irresistible to men who are 'unattractive'.

for example develop your sense of humor.

no one should discriminated against because he or she is not from a minority group

answer; the federal reserve system;

because the early people found out about it.