An emergency drug which increases heart rate, raises blood pressure, and dilates bronchi is:

Choice A reason: Antihistamines block histamine, not raise HR or BP. Epinephrine fits emergency needs. This errors per nursing pharmacology. It’s universally distinct, lacking stimulatory emergency effects.

Choice B reason: Sedatives reduce activity, not increase HR or BP. Epinephrine acts oppositely. This choice reverses nursing standards. It’s universally distinct, unsuitable for emergency stimulation.

Choice C reason: Epinephrine boosts HR, BP, and dilates bronchi in emergencies. This matches nursing pharmacology standards. It’s universally applied, distinctly effective for acute life-saving interventions.

Choice D reason: Hormones vary; epinephrine specifically meets all criteria emergently. This lacks precision per nursing standards. It’s universally distinct, too vague for the question’s intent.

Choice A reason: 30 cc overestimates; cups lose accuracy below 10 cc typically. Syringes are better for small doses. This errors per nursing standards. It’s universally distinct, impractical for precise small-volume measurement.

Choice B reason: 10 cc is the threshold; below this, cups are inaccurate. Syringes ensure precision, per nursing pharmacology. This aligns universally, distinctly standard for accurate liquid dosing.

Choice C reason: 20 cc exceeds the inaccuracy limit; 10 cc is correct. Cups falter below this level. This choice errors per nursing standards. It’s universally distinct, overestimating the threshold.

Choice D reason: 5 cc underestimates; inaccuracy starts at 10 cc for cups. Syringes are needed below this. This errors per nursing pharmacology. It’s universally distinct, missing the mark.