No one can ____ that he is clever.

Question: No one can ____ that he is clever.

Correct Answer: deny

Let's analyze each choice to understand why "deny" is the correct answer.

• a) deny: The word "deny" means to state that something is not true. In the given context, it implies that no one can declare it untrue that he is clever. This is the correct usage because the sentence logically needs a word that indicates the impossibility of refuting the statement about his cleverness.

• b) defy: The word "defy" means to openly resist or refuse to obey. This does not fit the context of the sentence, as it would imply a form of rebellion or challenge, which does not logically align with asserting someone's cleverness.

• c) denounce: The word "denounce" means to publicly declare to be wrong or evil. This term is too strong and carries a negative connotation that is inappropriate for the neutral to positive assertion of someone's cleverness.

• d) admire: The word "admire" means to regard with respect or warm approval. While this word has a positive connotation, it does not fit the grammatical structure of the given sentence. The sentence requires a verb that negates the possibility of the stated fact being untrue, which "admire" does not do.

Thus, the word "deny" most accurately completes the sentence: "No one can deny that he is clever." This implies that his cleverness is an undeniable fact.