Which One of the Following Best Illustrates a Density-Dependent Limiting

Multiple Choice

Which one of the following best illustrates a density-dependent limiting factor?

A) A farmer uses insecticide to kill large numbers of insect pests.
B) As the human population rises, more people will starve.
C) In the spring of the year, many animals disperse to new locations.
D) Plants usually have difficulty getting enough oxygen.