Final answer:
The largest part of an animal's diet is made up of plants and plant-based proteins.
Step-by-step explanation:
The subject of this question is biology.
The animal diet is the source of materials needed for building DNA and other complex molecules needed for growth, maintenance, and reproduction.
It must be balanced to provide the minerals and vitamins required for cellular function.
Plants and animals are both important sources of protein, but on a worldwide basis, plant protein foods contribute over 60% of the per capita supply of protein.
Insects are also a source of protein in many parts of the world.
Therefore, the largest part of an animal's diet, about 75%, is made up of plants and plant-based proteins.