Keon, a Heavyset Black Man, Has Recently Been Hired by a Company

Keon, a heavyset black man, has recently been hired by a company. His main function is in the finance department but he works on a committee with people from other departments in the company. He often hangs out with other members of the committee after work where he finds out that most of them are married while he is single. Which of his attributes would help the diversity of the committee, based on the narrow definition?

A) His weight
B) His department
C) His marital status
D) His race