The correct answer is: A. best
The word “best” means “of the highest quality or degree.” In this context, it is used to describe the boy who is the most intelligent, talented, or accomplished in class.
The word “better” means “of a higher quality or degree than something else.” In this context, it could be used to describe the boy who is more intelligent, talented, or accomplished than other boys in class. However, it could also be used to describe the boy who is more intelligent, talented, or accomplished than the speaker.
The word “good” means “of a high standard or quality.” In this context, it could be used to describe the boy who is intelligent, talented, or accomplished. However, it could also be used to describe the boy who is simply not bad.
The word “none of these” is not the correct answer because the boy in question is described as being the best in class.