The correct answer is C) any insect, plant, rodent, or fungus that causes harm or is unwanted.
The best definition of pest is any insect, plant, rodent, or fungus that causes harm or is unwanted.
That is why it is important to clean or home and surroundings to be aware of any pest. When a pest is present it is time to call the experts. Today in the market there are hundreds of pesticides but only the experts can identify the correct pesticide that eliminates a specific kind of pest.