Male satin bower birds adorn stations called bowers with parrot feathers, flowers, and other bizarre ornamentations in order to attract females. females inspect the bowers and, if suitably impressed, allow males to mate with them, after which they go off to nest by themselves. the evolution of this behavior is best described as due to

The answer would be: C) sexual selection.
Sexual selection happens where one of the individuals choose the partner to sex based on some criteria. In this case, the ability to have a beautiful bower will determinate the ability of the bird to have sex and produce offspring. The criteria are not limited to visual. It could be diverse in other cases, like a deeper croak in frog