Answer:
C. tropical rainforest
Step-by-step explanation:
Because of the very dense canopy in the rainforest, little sunlight reaches the ground. For this reason most rainforest tree leaves are large and dark green, which aid them in capturing more sunlight for the photosynthesis process. Some trees will grow large leaves at the lower canopy level and small leaves in the upper canopy. These are strategies to reach sunlight in a leafy ecosystem where the light input is low.
The climbing vines apply this strategy of growing to maximize the sunlight they receive. Many start life in the canopy before sending roots down to the ground.
The Epiphytes live on the surface of other plants to make the most of the sunlight in the canopy layer.