What two substances are examples of pesticides?

The correct choice highlights Aldrin and Dieldrin, which are indeed examples of pesticides. Both substances fall within the broader category of chlorinated hydrocarbon pesticides, primarily used in agricultural settings to control pests. Aldrin was used extensively until its ban in many countries due to environmental and health concerns, while Dieldrin is a derivative of Aldrin and was similarly utilized for pest control. Their classification as pesticides is due to their effectiveness in targeting insects and other pests.

In contrast, the other choices provided include substances that either do not fit the definition of pesticides or represent broader categories. For instance, while Ricin is a toxic compound derived from the castor oil plant and Glyphosate is a widely used herbicide, they do not relate in the specific context of conventional pesticide classification as closely as Aldrin and Dieldrin. Potassium and Sodium are essential elements in various biological processes but are not pesticides. The last option, which mentions herbicides and insecticides, references categories of pesticides rather than specific substances.