Which of the following best characterizes natural selection?
inment in which leaves grew only at the tops of short trees, giraff
a. faced with an environment in which leaves grew only at the to
responded by growing long necks.
onment where leaves grew only at the
b. only giraffes with long necks moved into an environment where leaves
tops of short trees.
iraffes that did not eat leaves from the tops of short trees grew shorter
c. the necks of giraffes that did not eat leaves from the tops
lack of exercise.
d. among a population of giraffes, those with long necks were able to survive better i
environment in which leaves grew only at the tops of short trees.