Tobacco consumption is known to stimulate secretion of adrenaline and nor-adrenaline. The component causing this could be

Options

A. nicotine
B. tannic acid
C. curaimin
D. catechin.

Answer

A

Explanation

Tobacco contains a large number of chemical substances including nicotine, an alkaloid. Nicotine stimulates adrenal gland to release adrenaline and nor-adrenaline into blood circulation, both of which raise blood pressure and increase heart rate.