Final answer:
The primary vasopressor used in resuscitation is epinephrine (c). Epinephrine constricts blood vessels, increasing blood pressure and improving circulation. It is commonly used in cardiac arrest situations and severe allergic reactions.
Step-by-step explanation:
The primary vasopressor used in resuscitation is epinephrine (c).
Epinephrine is a hormone and neurotransmitter that constricts blood vessels, increasing blood pressure and improving circulation. It is commonly used in cardiac arrest situations and severe allergic reactions (anaphylaxis).
Other options such as dopamine, norepinephrine, and phenylephrine may also have vasopressor effects, but epinephrine is considered the primary agent in resuscitation.