Select the option that is similar in meaning to the underlined word in the following sentence.
A good critic should also be a person of great candour.

The correct option is honesty.

Explanation:
The word candour (or candor) means the quality of being open, honest, sincere, and frank in speech or expression.
In the sentence, "A good critic should also be a person of great candour," it means a good critic should possess great honesty and truthfulness.

Let's examine the meaning of each option:
• will: Refers to determination, intention, or wish.
• resolution: Refers to a firm decision or resolve.
• honesty: Refers to truthfulness and sincerity, which is synonymous with candour.
• power: Refers to strength, authority, or control.

Therefore, honesty is the word most similar in meaning to candour.