All animals are
a. heterotrophs
b. polytrophs
c. biotrophs
d. autotrophs

A.) Heterotrops

Explanation:

Definitions:

A.) A heterotroph is an organism that cannot produce its own food, relying instead on the intake of nutrition from other sources of organic carbon, mainly plant or animal matter

B.) an organism or inorganic object or material which takes various forms.

C.) A plant-pathogenic fungi which establishes a long-term feeding relationship with the living cells of a host, without killing it as part of the infection process.

D.) an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

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