Sleep is prevented by

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(C) Amphetamines are a class of central nervous system $(CNS)$ stimulants. They increase the activity of neurotransmitters like dopamine and norepinep

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Amphetamines

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(C) Amphetamines are a class of central nervous system $(CNS)$ stimulants. They increase the activity of neurotransmitters like dopamine and norepinephrine in the brain. By stimulating the $CNS$,they increase alertness,focus,and energy levels,which effectively suppresses the sensation of fatigue and prevents sleep. In contrast,barbiturates and benzodiazepines are depressants that induce sleep or sedation,and psilocybin is a hallucinogen.

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