Which of the following refers to the lowest level of the rainforest that receives very little light?

The lowest level of the rainforest that receives very little light is referred to as the understory. This layer is situated just above the forest floor and is characterized by the absence of sunlight due to the dense canopy above it. As a result, plants in the understory are typically shade-tolerant species that have adapted to low light conditions.

The understory is crucial for the rainforest ecosystem, as it provides habitat for a variety of species, including insects, birds, and small mammals, that thrive in these shadowy environments. The limited light also means that growth is slower compared to the higher layers of the forest where light is more abundant.

In contrast, the canopy represents the uppermost layer of the forest, consisting of the tops of trees that receive full sunlight. Temperate rain forests are a specific type of biome characterized by moderate temperatures and significant precipitation—not necessarily related to the structure of tropical rainforest layers. Savannas are grassy plains with few trees, typically found in warmer climates, and are distinct from the layered structure of a rainforest.