Which category do malathion and parathion belong to? 

A)  systemic insecticides 
B)  chlorinated hydrocarbons 
C)  organophosphates 
D)  pyrethroids

Organophosphates

A group of chemicals used as insecticides, affecting the nervous system by inhibiting an enzyme critical for nerve function.

Systemic Insecticides

Chemicals that are absorbed by a plant and provide protection from pests by poisoning them when they feed on the plant.

Malathion

A chemical compound used as an insecticide, particularly effective against mosquitoes but also posing potential risks to human health and the environment.