What Is an Epigenetic Approach

What is an epigenetic approach?

A) It derives plausible explanations for engaging in forbidden behaviors, or gratifying objectionable instinctual impulses.
B) Unconscious strategies the ego employs for keeping anxiety, guilt, unacceptable impulses, and other threats to the ego out of awareness
C) A close, interdependent relationship between two organisms such as a parasite and its host
D) Each new stage of development incorporates in expanded and enriched forms all the previous stages.