The right answer is C. Level 1 (bottom).
Ecological pyramids occur in their basic producers (such as plants) and follow a sequence of several trophic levels (such as herbivores that eat plants, carnivores that eat herbivores, followed by carnivores that eat carnivores, And so on). The highest level is the top of the food chain leads to superpreders.
From molecule, cells, tissue,organ, organ system,organism
And from organism to the population, community, ecosystem, and biosphere :)
The answer is D) Sunlight.
Hope this helps!
-Payshence xoxo