Answer:
The correct answer is A.
Step-by-step explanation:
Producers are photosynthetic organisms such as plants and algae. They absorb energy from the sun and convert it to food. This group includes the largest number of individuals. Each of the higher trophic levels includes fewer individuals than the level below it, and roughtly 90% of the energy consumed by each level is lost as heat, meaning that the amount of energy at the highest trophic level is only a fraction of the energy found at the producer level.