Answer:
C) the source of the animal's food
Step-by-step explanation:
Phenotype is an important concept adopted in genetics and is usually defined as the set of observable characteristics of an organism.
Thus, this set includes the morphological and physiological characteristics of an individual, defined through the expression of their genes and may be inherited from their predecessors.
However, it is important to stress that the phenotype is not only determined by genes, but also influenced by the environment in which an individual is inserted, such as climate change or random variations.
An animal's food source, however, does not necessarily influence an animal's phenotype.
Given these statements, it can be concluded that the correct alternative is C.