Which layer of a tropical rainforest receives the least sunlight?
a. the top canopy
b. the second layer of the canopy
c. the third layer of the canopy
d. the ground

A topical rainforest is characterized by very tall trees which compete for light with each other. This means that the higher a layer is, the bigger chance it has for sunlight. All levels of canopy are quite high- so they still receive some sunlight.

The correct answer is the ground, which receives very little light

Answer they are produced by collision of tectonic plates;