Question

which symptom describes a short - term effect of using methamphetamines?
alertness
slow heart rate
anxiety
sleeping disorders

Explanation:

Methamphetamine is a central nervous system stimulant. In the short - term, it can cause increased alertness. Slow heart rate is more likely a long - term or other - condition - related effect (methamphetamine usually increases heart rate). Anxiety and sleeping disorders can be long - term or more complex effects related to chronic use rather than the immediate short - term effect.

Answer:

alertness