Question

Which trait is most likely to be acted on by natural selection?

A.
the knowledge that a person learns in school
B
the tricks a dog knows how to perform
C
the length of bird's beak
D
the size of a weightlifter's arm muscles

Answer 1

C. the length of a bird's beak

Step-by-step explanation:

All other options develop over a lifetime, and are not influenced by natural selection.