Question

what is a major goal of using pesticides today?
to develop very contaminated food stocks
to control pests and avoid economic damage
to wipe out (eradicate) every pest on earth
to make pests become resistant to pesticides

Explanation:

Pesticides are used to manage pests. Contaminated food stocks (first option) are a negative outcome, not a goal. Wiping out all pests (third option) is unrealistic as many pests have ecological roles. Making pests resistant (fourth option) is a problem caused by pesticide misuse, not a goal. Controlling pests to prevent economic losses (second option) aligns with pesticide use purpose.

Answer:

to control pests and avoid economic damage