Environmental factors that are affected by the number of organisms in a specific area (such as infectious diseases)
are referred to as:

Density-Independent

Density-Dependent

Exponential

Logistical

Density- Dependent

Explanation:

Density Dependent factors depend on how dense the area is. Disease, for example, spreads faster if people are in close quarters.

Density independent factors do not depend on the population of an area. For example, a tornado will happen whether there are two people in the city or 40000.

c is the correct answer!