The act of purging or purification or elimination of a complex by bringing it to consciousness and affording to expression is:

Correct option is A

Catharsis is a psychoanalytic concept involving the release of pent-up emotions by bringing unconscious content into conscious awareness.
Explanation of options: (a) ✔ Catharsis involves emotional purging and relief. (b) ✘ Aversion therapy pairs an unpleasant stimulus with an unwanted behavior. (c) ✘ Flooding is an exposure-based behavioral technique. (d) ✘ Systematic analysis isn’t a standard term for emotional release.