which one of the following words is not an action verb?\na. trained\nb. tested\nc. designed\nd…

which one of the following words is not an action verb?\na. trained\nb. tested\nc. designed\nd. happy\nplease select the best answer from the choices provided\na\nb\nc\nd
Answer
Brief Explanations:
Action verbs describe an action. 'trained', 'tested', and 'designed' are action - related. 'happy' is an adjective that describes a state of being, not an action.
Answer:
D. happy