The nurse is caring for a client newly diagnosed with hypertension and requires medication therapy. Which of the following medications below is considered a first line treatment for hypertension?

The correct answer is C: Lisinopril. Lisinopril is considered a first-line treatment for hypertension because it is an ACE inhibitor, which helps lower blood pressure by dilating blood vessels. It is well-tolerated, effective, and has shown to reduce the risk of cardiovascular events. Doxazosin (A) is an alpha-blocker, Carvedilol (B) is a beta-blocker, and Clonidine (D) is a centrally acting alpha-2 agonist, which are not typically first-line choices for hypertension. Lisinopril is preferred due to its proven efficacy and safety profile in managing hypertension.