<p>Evolutionary fitness, as you know, is the ability of an organism to pass on its genes by reproducing offspring. So, can care help someone reproduce children? I suppose it could. Certain females are attracted to men who care and vice versa. This attraction could lead to an increase in one’s individual fitness. However, I don’t think care is an evolutionary response that targets this increase. It makes more sense that care evolved as a part of kin selection, which favors the reproductive fitness of the community (not the individual). A potential sexual partner’s attraction to someone’s having care could be an emergent trait of this evolutionary response, though.</p>