Hey!
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![\Large\boxed{\mathsf{(C)~Stimulants}}](https://img.qammunity.org/2020/formulas/health/middle-school/ilw5ahrkpu4ynvtee83tthtdfaih3cole9.png)
Depressants - these are drugs that make normal activities depressing.
Narcotics - these are drugs that are illegal that relieve pain.
Stimulants - these are drugs that increase nerve activity which makes you more energetic.
As we can see, the best definition that fits the questions is option C!
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Hope This Helped! Good Luck!