Verbal Aptitude

Principle: 'In an integrated pest management (IPM) regime, chemical pesticides may be applied if and only if pest density exceeds the economic injury threshold AND biological predators fail to reduce the population within 48 hours.' Which action conforms to this principle?

Options:

• (A) Applying pesticide when pest density exceeds the economic injury threshold and parasitic wasps fail to reduce the population after 48 hours.
• (B) Applying pesticide prophylactically before any pests appear.
• (C) Applying pesticide when pest density is below the injury threshold because biological predators are absent.
• (D) Applying pesticide when biological predators are successfully reducing pests below the threshold.