but you would already know that one's transgender
if you had seen the picture without any context i guarantee you would not have known she was transgender
fine, get 4 actual women and one m->f and see who can point out the trans one
There are plenty of "landmarks" that differentiate a man and a woman's body structure. Shoulders, hands, feet, hips, etc. However, its not concrete and, just as real life does, crosses over to both genders. Plenty of women have masculine traits in body structure, and appearance, and vice versa with men. I guarantee you that you could find plenty of photos of women online with masculine builds and say "this is a transgender person" and people would just believe it if they didn't look any further.