Nicotine's Acute Cardiovascular Stimulation Steps:

• Recall nicotine stimulates sympathetic nervous system, releasing catecholamines.
• Identify key effects: increased heart rate (tachycardia), elevated blood pressure (hypertension), and vasoconstriction.
• Match to statements: assume 1=increased heart rate, 2=elevated blood pressure, 3=vasoconstriction.
• Confirm all three occur short-term, selecting option including all.

Why A is correct:

• Nicotine binds nicotinic receptors, triggering norepinephrine release, which directly causes tachycardia, hypertension, and vasoconstriction per pharmacology principles.

Why the others are wrong:

• B excludes vasoconstriction, a core effect narrowing blood vessels.
• C excludes hypertension, ignoring blood pressure rise from cardiac output increase.
• D excludes tachycardia, overlooking heart rate acceleration via sympathetic activation.

Final answer: A