Despite reading numerous research studies that associate fast food consumption with heart disease and diabetes, Rachel continues eating fast food and considers it harmless. Rachel's thinking is an example of:A. belief assimilation.

B. belief consolidation.

C. belief perseverance.

D. operation of the availability heuristic

C. belief preservance

Explanation:

Belief perservance: It is defined as holding onto your ideas over time, and actively rejecting information that contradicts your ideas resulting in less internal mental conflict and more social conflict.

As in the given scenario, Rachel has knowledge about the disadvantages of the fast food but she is actively rejecting the information and holding onto her ideas over time,. Hence Rachel's thinking is an example of belief perseverance.