__________ such as pathogens, injuries, age, gender, and a family history of disease may strike us as the most obvious causes of illness.

A) Psychological factors
B) Sociocultural factors
C) Biological factors
D) Environmental factors

Biological factors such as pathogens, injuries, age, gender, and family history of disease directly affect the body and are often seen as the most obvious causes of illness. Psychological factors, sociocultural factors, and environmental factors may also play a role in illness, but they may not always be as readily apparent or easily identifiable as biological factors.