Correct Answer:
B. Discourage
The correct answer is B: Discourage. The verb deter means to discourage someone from doing something by instilling doubt or fear of the consequences. Thus, discourage perfectly aligns with the meaning of preventing an action by influencing someone's motivation or perception of risk. When you deter someone, you are actively working to make them less likely to pursue a particular course of action, often by highlighting negative outcomes.
- Option A: Encourage is incorrect because it means to give support, confidence, or hope to someone, making them more likely to do something. This is the direct opposite of deterring.
- Option C: Attract is incorrect as it means to draw or pull towards oneself or itself. While it involves influencing someone, it's about drawing them in rather than pushing them away from an action.
- Option D: Help is incorrect because it means to assist or aid someone. Helping is about providing support, which is not the primary function of deterring, even if it could indirectly prevent an action.