Which scenario is an example of adaptive radiation? A. After the extinction of dinosaurs that ate leaves from tall trees, a new leaf-eating
species that could access this resource thrived.

B. As a population of small mammals grew in size, members of the population
competed for limited resources.

C. Smaller carnivores occupied grasslands after a large carnivore disappeared
from those spaces.

D. The limbs of a redwood tree grew steadily upward, reaching toward the sunlight
shining from above.

E. Aquatic birds such as seals and penguins developed flippers to help them
navigate through the water.