The correct option is B Convergent evolution
Examples of analogous structures are wings in flying animals like bats, birds, and insects. Fins of a fish and flipper of a whale are similar structures performing the same functions but their internal atructure is disimilar and the same is is true for wings of birds and insects. Analogous structures develop due to convergent evolution where in organisms belonging to different species are exposed to the same environemental conditions and they adapt similarly.