According to Darwin's theory of natural selection,
a) the environment "selects" organisms that are more complex and more advanced.
b) the members of a species that are best adapted to their environment are more likely to survive and produce more offspring.
c) giraffes evolved longer necks because they were constantly reaching for the tender, higher leaves in the tall trees in their environment.
d) evolution is a process whereby experience modifies an organism's genes.
e) evolution is the sole factor affecting the behavior of current species.
Answer: B