Which option best describes an Irrational Belief?

• A. A belief grounded in objective evidence
• B. A belief that must be true for success
• C. A flexible belief adaptable to new information
• D. An unreasonable thought leading to emotional problems.

Answer: (D)

Irrational beliefs are rigid, exaggerated, and illogical thoughts about ourselves or the world that we cling to as if they must be true, even when evidence suggests otherwise. When such thoughts arise, they tend to produce strong negative emotions and unhelpful behavior. The option that describes this best is: an unreasonable thought that leads to emotional problems. That phrasing captures both the lack of logic and the emotional impact that characterizes irrational beliefs in cognitive-behavioral approaches like REBT. The other descriptions point to more rational or adaptable ways of thinking—beliefs grounded in evidence, beliefs that can change with new information, or beliefs that impose a rigid condition for success—none of which inherently convey the distress-driving nature of irrational beliefs.