Only the brave . . . . . . . the fair. A. deserving B. deserves C. deserve D. none

The correct answer is: deserves.

The word “deserve” means to be worthy of or entitled to something. In this case, the brave deserve the fair. This is because the brave are willing to risk their lives to protect others, while the fair are those who are kind and just.

The other options are incorrect because they do not make sense in the context of the sentence. The word “deserving” is an adjective, and it cannot be used as a verb. The word “deserve” is a verb, but it is in the wrong tense. The word “deserve” is also in the wrong person. The sentence is about the brave, so the verb should be in the third person singular.

Therefore, the correct answer is “deserves”.