Which of the Following Is a Common Critique of Psychological

Which of the following is a common critique of psychological studies?

A) Contemporarily, nearly all studies over-utilize juveniles
B) Historically, they have often used small, unrepresentative samples of offenders in prisons or mental institutions
C) Historically, few studies utilize established scientific method protocols, such as random samples
D) Contemporarily, most studies are only done in laboratories and so results are questionable