Answer:
c.disease factors
gene defects, infectious agents, and congenital malformations are disease factors that can cause and contribute to the onset or severity of a child's illness
Step-by-step explanation:
These disease factors are characteristics, reasons or exposure to certain agents that substantially increase the probability of a illness.
They are factors that influence our vulnerability to certain diseases.
Our genetics play a big role in our health and predisposition to develop certain diseases.