Which of the following groups consists of heterotrophs?

Heterotrophs are organisms that cannot produce their own food and rely on other organisms for their nutrition. They obtain food by consuming other organisms or organic matter. Among the options given, the group that consists of heterotrophs is "Man, Mucor and Mushroom". This is because "Man" refers to humans, which are heterotrophs, and both "Mucor" and "Mushroom" are fungi that are also heterotrophic. The other options include organisms that are either autotrophic (able to produce their own food) or have both autotrophic and heterotrophic modes of nutrition.