Concept:A word that describes a frightening or threatening quality best fits the given sentence.
Explanation:The sentence says Alfred is afraid of his wife.
This means his wife has a quality that frightens or overawes him.
Among the options, “intimidating” means having a frightening, overawing, or threatening effect.
The other words do not fit the idea of fear: “eminent” means famous, “momentous” means very important, and “prominent” means well-known or noticeable.
Therefore, “intimidating” correctly completes the sentence.
Answer:D. intimidating