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What is the part of the pesticide that kills the pest?

  1. Active ingredient

  2. Adjuvant

  3. Carrier

  4. Inert ingredient

The correct answer is: Active ingredient

The active ingredient is the part of the pesticide that actually kills the pest. The other options, such as the adjuvant, carrier, and inert ingredient, play important roles in the effectiveness and application of the pesticide, but they do not directly contribute to killing the pest. The adjuvant helps enhance the efficacy of the active ingredient, the carrier helps distribute the active ingredient evenly, and the inert ingredient carries the active ingredient to its target. However, none of these components have the direct killing power of the active ingredient.