The correct option is B Morphine is often given to persons who have undergone surgery as a painkiller
Of the given, the correct statement is "Morphine is often given to persons who have undergone surgery as a painkiller".
Morphine is a pain medication of the opiate type which is found naturally in a number of plants and animals. It can be taken for both acute pain and chronic pain.
Barbiturates is often mistaken for "truth serum" as the drug does not itself force people to tell the truth, but is thought to decrease inhibitions and slow creative thinking, making subjects more likely to be caught off guard when questioned, and increasing the possibility of the subject revealing information through emotional outbursts.
Smoking or chewing tobacco immediately raise the blood pressure temporarily, but the chemicals in tobacco can damage the lining of your artery walls.
Cocaine is given to patients after surgery as it acts as a local anesthetic by blocking conduction of nerve impulses.