Answer:
Pesticides is the correct answer.
Step-by-step explanation:
Pesticides are substances, usually synthetic sometimes biological that are used to kill or control the activities of pests including weeds. Most pesticides are usually sprayed on crops to protect plants from weeds, diseases, or insects. Pesticides include insecticides, herbicides, disinfectant, insect repellent, avicide, termiticides and fungicide.