Which of the following statements is true about theories in personality psychology?

A) A good theory generates testable hypotheses.
B) A theory proves the relationship between constructs or events.
C) The best theory is the one that explains a phenomenon with a large number of constructs.
D) There is no way to statistically validate a theory, so theories are accepted or rejected based on opinion.

A good theory in personality psychology should generate testable hypotheses, which can be empirically examined through research. Theories that cannot be tested or proven through empirical evidence are not scientific and do not contribute to the advancement of the field. B is false because a theory does not prove relationships between constructs; instead, it proposes explanations or predictions for those relationships. C is false because a theory's quality should not be judged by the number of constructs it contains, but by how well it explains the phenomenon in question. Finally, D is false because theories in personality psychology (like any other scientific discipline) are validated through empirical research, and their acceptance or rejection is based on the available scientific evidence, not on individual opinions.