Is introspection a source of self-knowledge?

A) Yes, and it is the only true source of self-knowledge.
B) Yes, and it is just one source of self-knowledge.
C) No, but self-actualized people may benefit from it.
D) No, it is not a source of self-knowledge.

Introspection is indeed a source of self-knowledge, allowing individuals to reflect on their thoughts, feelings, and motives. However, it is not the only source; other methods such as feedback from others and observation of one's own behavior also contribute to self-knowledge.