Final answer:
The stability of same-gender friendship can be influenced by cultural and social norms. Males may often show less stability in these friendships, while females might demonstrate more fluidity. This is a sociological trend and there can be individual differences.
Step-by-step explanation:
The question regarding which gender shows less stability with regard to same-gender friendship does not have a universally agreed-upon answer since this can vary depending on cultural, social, and individual factors. However, from a sociological perspective, it is often suggested that males may show less stability in same-gender friendships due to societal norms that discourage expressive emotional behavior among men. In contrast, females may enjoy more fluidity in their friendships, as women in many societies are often more encouraged to express homosocial feelings through physical closeness and emotional sharing without it being stigmatized.
It's also important to note that these observations are based on trends and stereotypes, so there will always be individual exceptions. Sociologically speaking, peers reinforce gender roles and can criticize those who act outside of these norms (as described in choice C), and these reinforced roles can influence how gender affects friendship stability.