Which statement best represents how structure relates to function?

Butterfly cocoons are often camouflaged.
A horse's mane is often black.
Some insects live longer than others.
Many tropical birds can be taught to speak.

Question

Which statement best represents how structure relates to function? 

       Butterfly cocoons are often camouflaged.
       A horse's mane is often black.
       Some insects live longer than others.
       Many tropical birds can be taught to speak.

whiteowl3 · Answer

The structure of an organism helps them perform their functions. 
That is the statement I will give you so you can figure the problem out on your own.