In a food chain involving a primary producer, a primary consumer as well as a secondary consumer, the sharing of trophic energy is in the form that the

In a food chain involving a primary producer, a primary consumer, and a secondary consumer, energy is transferred from one level to the next. The primary producer, such as plants, uses the sun's energy to make food. The primary consumer, such as a herbivore, eats the plants, and in doing so, they obtain some of the energy that was stored in the plants. The secondary consumer, such as a carnivore, eats the primary consumer, and in doing so, they obtain some of the energy that was stored in the herbivore. However, not all of the energy is transferred from one level to the next. Some of the energy is lost as heat or used up by the organism in its daily activities. Therefore, the secondary consumer gets only a small portion of the energy contained in the primary producer. So, option D is the correct answer.