The leaves of some plants have waxy coats. This feature helps prevent water loss.
Which statement describes an example of evolution?
A. All trees have variation in their genes for thick, waxy coats.
B. Thick, waxy coats become more common on a species of trees
during a drought.
C. All plants pass their genes for thick, waxy coats to their offspring.
D. Large numbers of trees with varying thicknesses of waxy coats
sprout in forests each year.