Clearly, many of the landmark obedience studies were highly unethical (Milgram's and Zimbardo's studies treated participants in ways that ARE NOT allowed today). But those studies also taught us a lot.
a) This statement serves to justify unethical research practices.
b) This statement acknowledges the unethical nature of the studies while recognizing their contributions to knowledge.
c) This statement condemns the unethical research practices without acknowledging their contributions.
d) This statement implies that unethical research practices are acceptable in certain situations.