From the words lettered A to E, choose the word that best completes each of the following sentences. The Principal is really a kind person............heart

From the words lettered A to E, choose the word that best completes each of the following sentences.
The Principal is really a kind person............heart

Answer Details

The word that best completes the sentence is "at". The complete sentence would be: "The Principal is really a kind person at heart." "At heart" is an idiomatic expression that means "deep down" or "in one's true nature". So, the sentence means that the Principal is a kind person in their true nature.