Question

cell research led to the development of epidemiology, which is a field of medicine that deals with the study of the cellular basis of human infections. the study of the immune system. the study of how infectious diseases spread through a population. the study of the basic properties and functions of cells.

Explanation:

Epidemiology is the branch of medicine that focuses on the patterns, causes, and effects of health - related states or events in defined populations, especially the spread of infectious diseases through a population.

Answer:

the study of how infectious diseases spread through a population.