The theory of evolution by natural selection as proposed by Charles Darwin and Alfred Wallace includes which of the following components?
i. Individuals of the same species vary in their characteristics;
ii. All cells come from pre-existing cells;
iii. Artificial selection by humans for certain traits produced all species that exist;
iv. Differences among individuals of the same species are heritable;
v. Heritable variation among individuals will enable some to survive and reproduce better.
Select one:
a. i, ii, iii, iv, and v
b. i, ii, and iii
c. i, iv, and v
d. i, ii, iv, and v