The correct option is B consumer
A food chain starts from the producers, to the consumers and then, ends with the decomposers. Each of the levels in a food chain depicts a distinct trophic level. Human beings are always the consumers in a food chain, because they do not make any energy from the primary source, the Sun, directly. Decomposers are the organisms that help in degrading dead bodies back into the earth. Humans are not decomposers.