A very dilute solution of which of the following alkaloids is used to dilate the pupils of the eyes?

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Atropine is an alkaloid obtained from the plant Atropa belladonna. A very dilute solution of atropine is used in ophthalmology to dilate the pupils of the eyes (mydriasis) for eye examinations. Equanil is a tranquilizer used to treat anxiety. Ephedrine is a bronchodilator and decongestant. Adrenaline is a hormone and neurotransmitter used to treat anaphylaxis and cardiac arrest. Answer: Atropine