The correct answer is the option A.Both get their energy by feeding on other organisms.
The producers such as plants are the organisms, which are capable of synthesizing their own food by various processes. all the other organisms, depends on the producers to obtain the food.
The consumers and the decomposers both obtain their food from the other organisms. the primary consumers consume the plants directly and the secondary as well as tertiary consumers consume other animals to obtain the food. The decomposers feed on the dead decaying matter of the plants and animals for their own food requirement, they cannot synthesize their own food, they rely on the organic product left of the dead organisms.
