**Core Concept**
The concept of "Undoing" is a defense mechanism described by psychoanalyst Sigmund Freud, where an individual attempts to undo or compensate for a previous unacceptable thought or action. This defense mechanism is often seen in individuals struggling with guilt, anxiety, or shame.

**Why the Correct Answer is Right**
The defense mechanism of "Undoing" involves a conscious attempt to neutralize or make up for a previous wrong or unacceptable behavior. This can be done through verbal or physical actions, such as making amends, apologizing, or engaging in a compensatory behavior. The underlying psychological mechanism is a way of reducing feelings of guilt or anxiety associated with the original behavior.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the concept of "Undoing".
**Option B:** This option is incorrect because it describes a different defense mechanism.
**Option C:** This option is incorrect because it describes a different psychological concept.

**Clinical Pearl / High-Yield Fact**
A key aspect of "Undoing" is that it is often a conscious and deliberate attempt to make amends for a previous behavior, rather than a genuine change in behavior. This can be a subtle distinction in clinical practice.

**Correct Answer: B.**