The correct answer is make ineffective.
B. make ineffective
The correct answer is (B) Make ineffective; To render neutral, render ineffective, counteract, or counterbalance by opposite force or effect. In international law, to make a country neutral. In chemistry, to modify specific properties of a substance; in physics, to make electrically inert.
Neutralize comes from French neutralizer, Latin neutralisare.
Examples of use:
- Your carelessness has just neutralized all our efforts.
- The ruler dispatched troops to the village to neutralize any opposition.