I believe that the answer is B
It is the sciatic nerve that runs down the thigh, leg and foot
The wings are adapted so they can hover and feed off of flowers.
The beak and tong is modified to extract nectar from flowers with long flower corollas.
There are 4 valence electrons in an atom of carbon. Carbon is in group 4A of the periodic table. There are 6 electrons in a carbon atom but only 4 of them are valence. carbon can never form more than 4 bonds and is unhappy with less than 4.
Answer:
B
Explanation:
You can observe the same behaviour in female birds of paradise. The females tend to be rather picky on who they choose to mate with.