Relativism asserts that:

Relativism is a philosophical position that suggests that moral truths and ethical standards are not absolute but are instead shaped by cultural, societal, or individual contexts. Thus, the assertion that every perspective and behavior standard is equally valid aligns directly with the core ideas of relativism. This viewpoint acknowledges that different cultures or individuals may have varying beliefs about what is right or wrong, and it advocates that these differing beliefs are all valid in their contexts.

In the realm of ethics, relativism emphasizes understanding and tolerance for differing moral views, promoting the idea that one should not impose their own standards on others. This contrasts sharply with absolutist perspectives, which believe in a single, universal standard of morality that applies to all individuals regardless of context. Therefore, the correct answer highlights the essence of relativism, evaluating the validity of moral standards through a lens that appreciates diversity and the influence of cultural or subjective factors on ethical beliefs.