Final answer:
A) Action verbs are unnecessary in operational definitions. Action verbs serve to clarify behavior descriptions in operational definitions by providing a concise and direct way to describe actions.
Step-by-step explanation:
Action verbs serve an important purpose in operational definitions. They help clarify behavior descriptions by providing a concise and direct way to describe actions. By using action verbs, researchers can cut unneeded words and make their definitions more precise and meaningful. For example, instead of saying 'reach a decision,' researchers can use the action verb 'decide' to express the same idea.