Question

A male bird with long feathers may have a more difficult time flying, but is more likely to attract a mate. Which theory does this represent?neutral selectionnatural selectionsexual selectionkin selection

Answer 1

In nature, there is more than natural selection, in this case even when in nature the environment does not favor this trait, there is a selective pressure exerted to preserve long feathers, and this is given by the potential mate, therefore we are talking of sexual selection.