A preparation for killing insects is

Correct answer: Insecticide

Explanation: ✅ Correct Answer: B) Insecticide 📚 Explanation: An 'insecticide' is a specific chemical substance or preparation formulated to kill insects, especially those that act as agricultural pests or disease vectors. The suffix '-cide' comes from Latin and signifies the act of killing. These substances are widely used in farming and public health campaigns to protect crops and control bugs. It is distinct from rodenticides, which are used to target rats and mice instead.