Question

final review
for example, when a population becomes very dense, diseases can spread more easily. this is why we sometimes practice social distancing during disease outbreaks such as pandemics.
when do density - dependent limiting factors have a greater impact on a population?
when the population is spread out thinly
when there are only a few individuals present
when the population is very dense and packed together

Explanation:

Density - dependent factors like disease spread are more impactful in dense populations as there is more contact between individuals.

Answer:

when the population is very dense and packed together