Which of the following best describes the term biodiversity in agriculture?

The term biodiversity in agriculture is best described as the variety in plant and animal species used in farming. This concept emphasizes the importance of having diverse species within agricultural systems, as it contributes to ecological balance, enhances resilience against pests and diseases, and promotes healthier ecosystems. Increased biodiversity leads to improved soil health, better crop yields, and a wider array of food options.

The other choices reflect practices or concepts that do not align with the definition of biodiversity. Concentrating solely on similar crops or a single species can reduce ecological resilience and soil vitality, whereas the elimination of pests through chemicals does not foster biological diversity but rather can harm beneficial organisms. Thus, emphasizing variety in species directly supports the idea of biodiversity in agriculture.