Which one of the following is a correct match?

Nicotine is an alkaloid that enters the body through smoking. How many of the following characteristics are associated with its effects?
$(i)$ Increases blood pressure
(ii) Decreases respiratory rate
(iii) Causes cancer of the lungs,throat,and bladder
(iv) Induces allergies
$(v)$ Can cause emphysema
(vi) Decreases the level of $O_2$ in the blood

From which of the following is $LSD$ obtained?

Which of the following is a synthetic sedative drug?

Codeine is obtained from.........

......... are known as stimulants and ......... are known as sedatives.