Select one criteria on whose basis we can classify plants and animals.

Plants and animals both carry out the process of breathing, transportation of substances from one part of the body to another and reproduction.

Plants make their own food by the process of photosynthesis, so they are autotrophic organisms while animals depend on plants or other organisms for their food and are called heterotrophic organisms.

Thus, plants can be differentiated from animals on the basis of mode of nutrition.

Hence, option C is the correct answer.