Which of the following is a secondary dimension of diversity?​

A) ​Gender
B) ​Religious beliefs
C) ​Physical abilities
D) ​Sexual orientation

Religious beliefs are considered a secondary dimension of diversity, as it is not necessarily an inherent and visible characteristic, but rather a learned behavior and personal belief. Gender, physical abilities, and sexual orientation are all examples of primary dimensions of diversity, as they are inherent and visible characteristics that can lead to societal advantages or disadvantages.