The correct option is D. since the loss is below the 10% level, the farmer should do nothing at this time
Step-by-step explanation:
-Integrated pest management (IPM) is a central organizing principle to guide pesticide use.
-IMP emphasizes the treatment of pests before they get ahead, that is, it points more to a preventive treatment since it is the most effective.
-In this case we already see the consequence of a plague and since the loss is not so significant, IMP recommends doing nothing since the application of products is not economically profitable either.