People are self-schematic on dimensions:

A) that are important to them.
B) on which they think they are extreme.
C) on which they are certain the opposite does not hold.
D) All of the above

Self-Schematic

Relating to or concerning the cognitive aspects that represent how individuals perceive themselves in different contexts.

Dimensions

Measurable features that define or differentiate objects, concepts, or conditions along various axes like size, time, or scope.

Extreme

Positions, opinions, or actions that are far removed from the ordinary or moderate; often implying a significant deviation from the norm.