Which of the following best defines the term "biological control"?

The concept of biological control specifically refers to the use of natural predators, parasites, or pathogens to reduce pest populations. This approach leverages the natural relationships between organisms in an ecosystem, where certain species can effectively manage and suppress populations of pests that might otherwise become problematic. For example, introducing ladybugs can help control aphid populations in a garden.

Utilizing natural predators is a more sustainable and environmentally friendly method of pest management compared to chemical methods. It minimizes the negative impacts on non-target species and reduces the risks associated with chemical residue in the environment.

In contrast, managing pests using chemicals, increasing biodiversity, or removing invasive species may play roles in broader pest management strategies, but they do not encapsulate the essence of biological control like the use of natural predators does.