Answer:
C. the process by which cells become specialized in their form to aid in their function.
Step-by-step explanation:
Differentiation is the process by which cells become specialized in their form and function. During the development of an organism, cells undergo changes that allow them to perform specific functions within the body. For example, muscle cells, nerve cells, and skin cells all have different characteristics and perform different functions within the body. Differentiation occurs through a combination of genetic and environmental influences, and it allows cells to specialize and perform specific tasks within the body.