48.As a biologist, it is your job to look for plants that have evolved structures with a selective advantage in dry，hot conditions. Which of the following adaptations would be least likely to meet your objective?
(A)CAM plants that grow rapidly
(B) large, fleshy stems with the ability to carry out photosynthesis
(C)a thick cuticle on fleshy leaves
(D) small, thick leaves with stomata on the lower surface
(E)plants that do not produce abscisic acid and have a thick, short root