Final answer:
Pesticides are toxic because they are intended to kill or repel the target pests, which is necessary for their effectiveness. The statement is true, though careful management is needed to prevent harm to non-target organisms and the environment.
Step-by-step explanation:
The statement Pesticides are toxic because they must be able to kill the target pest is A. True. Pesticides are chemical or biological agents designed to control pests, including insects, weeds, and disease-causing organisms. The toxicity of these substances is indeed a necessary feature, as they are intended to be lethal or repelling to the pests they target. However, it is also vital to manage the use of pesticides carefully to minimize potential harm to non-target organisms, including humans, beneficial insects, and the environment.