The layer of the rainforest that gets the most sunlight is the emergent layer.

Here's why:

* Highest Layer: The emergent layer is the topmost layer, reaching above the canopy.

* Direct Sunlight: Trees in the emergent layer are tall enough to break through the canopy and receive direct sunlight.

* Limited Competition: Since there are fewer trees in the emergent layer, competition for sunlight is less intense.

Let me know if you'd like to know more about the different layers of the rainforest!