Which of the following is an example of a pest control chemical?

Herbicide is classified as a pest control chemical specifically designed to target and eliminate unwanted plants, commonly referred to as weeds. The primary function of herbicides is to inhibit the growth of certain plant species, thereby allowing desired crops or vegetation to thrive without competition. They work by interfering with specific metabolic processes in plants, leading to their death or reduced growth.

Hydrolysis refers to the chemical breakdown of a compound due to reaction with water and does not denote a specific category of pest control chemicals. Granule is a type of formulation for delivering pesticides or herbicides but does not itself describe a type of chemical. Inert ingredients are those components in pesticide formulations that do not contribute to the intended pest control effect but may serve other purposes, such as aiding in application or improving stability, and therefore are not considered pest control chemicals on their own. Thus, herbicides stand out as the correct answer, as they directly represent a category of pest control chemicals actively used in agricultural and horticultural practices.