Which of the following is NOT a function of a pesticide?

Pesticides are primarily designed to manage pests, which can include insects, weeds, fungi, and some types of bacteria. Each type of pesticide is formulated specifically for certain types of pests: insecticides target insects, herbicides target weeds, and fungicides deal with fungal issues.

Enhancing plant growth is not a function of pesticides. In fact, this is usually associated with fertilizers or plant growth regulators, which serve a different purpose in agriculture and horticulture. The use of pesticides is focused on reducing the presence of pests to protect crops, while promoting growth is a separate aspect of plant care and cultivation. Therefore, the correct answer reflects that enhancing plant growth is outside the scope of what pesticides are intended to do.