Hello i want help please .. The doctor gave me this assignment (bring up a drug and make an IR for it) and I don't know how to work on it

Which statement is the best summary of the model? a-a series of aerobic and anaerobic reactions take place in cells b- the sun's energy moves through trophic levels in a food chain c-light energy is converted into stored chemical energy plants. d- food molecules are broken down in the cells if living things.