Which term refers to a witty and amusing person who makes jokes?

The term that best describes a witty and amusing person who makes jokes is "wag." A "wag" is typically someone known for their cleverness and humor, often delivering jokes or quips in a light-hearted manner. This term emphasizes the playful aspect of humor, suggesting a person who is always ready with a quick or entertaining remark.

The other options have different connotations. "Wit" refers to the ability to express clever or humorous ideas, but it doesn’t specifically denote a person. "Jest" refers to an act of making a joke or a playful remark, but it is not used to describe a person. "Banter" describes playful and friendly exchange of teasing remarks, but it relates more to the conversation style rather than an individual’s character. Therefore, "wag" is the most fitting choice for someone known for their humor and jokes.