What defines a biorational pesticide?

A biorational pesticide is characterized by its formulation that includes either synthetic or natural compounds while emphasizing a lower risk profile for non-target organisms, humans, and the environment. This means that such pesticides are designed to minimize adverse effects, making option B the correct definition.

Biorational pesticides often target specific pests and may have mechanisms of action that reduce the likelihood of resistance development, promoting sustainable pest management practices. They are utilized in integrated pest management (IPM) strategies, enhancing the balance between effective pest control and environmental safety.

The other choices do not accurately encapsulate the essence of biorational pesticides. For instance, while some biorational pesticides may include natural active ingredients, not all are exclusively derived from natural sources. High volume applications do not align with the biorational approach, as these pesticides are typically used in more targeted applications rather than broad-spectrum treatments. Additionally, claiming that a biorational pesticide is effective against all types of pests undermines the selective nature of these products, which are usually developed to target specific pests rather than a wide range.