Choice A rationale:

Acetaminophen, also known as Tylenol, works by inhibiting the synthesis of prostaglandins, which helps reduce pain and fever.

Prostaglandins are chemicals produced by the body in response to injury or illness and are known to promote inflammation, pain, and fever.

By inhibiting the synthesis of prostaglandins, acetaminophen reduces these symptoms.

Choice B rationale:

This option is not correct.

Acetaminophen does not work by blocking the release of histamine.

Histamine is a chemical that plays a role in allergic reactions and inflammation, but it is not the primary target of acetaminophen.

Choice C rationale:

This option is not correct.

Acetaminophen does not increase the production of endorphins.

Endorphins are natural painkillers produced by the body, but acetaminophen's mechanism of action is related to prostaglandin inhibition.

Choice D rationale:

This option is not correct.

Acetaminophen does not stimulate the central nervous system.

Its primary action is the inhibition of prostaglandin synthesis in peripheral tissues.