According to Darwin's Theory of Natural Selection

According to Darwin's theory of natural selection:
1) Individuals within a species vary with regards to heritable traits.
2) Individuals who have certain characteristics are more able to survive and reproduce.
3) Individuals who pass their traits down to offspring will eventually change the characteristics of the species.

A) 1
B) 2
C) 3
D) 1 and 2
E) All of these