Out of Moss, Agaricus, Fern, Euspongia, fish, how many organisms are heterotrophic?
A. 2
B. 3
C. 4
D. 5

Dear student,
Please find below the answer:

The correct option is (B). 
Organisms that cannot make their own food and depend on other plants and animals for nutrition are called heterotrophs. Out of the given options, Agaricus, Euspongia and fish are heterotrophic organisms. 

Hope this clears your doubt.
Regards.