Concept:Overcrowding in a population creates stress and resource scarcity, but it does not create commensalism, which is a relationship between different species.
Explanation:When a population becomes overcrowded, individuals compete intensely for limited resources such as food, water, shelter, and space.
This intense competition can weaken weaker individuals, making them more vulnerable to starvation and disease, which often leads to death.
Some individuals may respond to overcrowding by migrating away to less crowded areas where survival chances are better.
Thus, death, competition, and migration are all possible direct consequences of overcrowding.
Commensalism, on the other hand, is a specific ecological interaction where one species benefits and the other is neither helped nor harmed.
It is not an automatic or necessary result of overcrowding within a single population.
Therefore, overcrowding does not directly result in commensalism.
Answer:B. commensalism