Which statement about ACE II receptor antagonists is true?

The statement that ACE II receptor antagonists prevent sympathetic hormone responses is accurate because these medications specifically target the angiotensin II receptor, blocking its action in the body. Angiotensin II is a potent vasoconstrictor and plays a significant role in the regulation of blood pressure and fluid balance. By inhibiting the effects of angiotensin II, these antagonists help to reduce blood pressure and alleviate related cardiovascular stress, minimizing the sympathetic drive that often results in increased heart rate and vascular resistance.

In contrast to this choice, other statements involve inaccuracies regarding the classification and effects of these drugs. For instance, ACE inhibitors, which are different from ACE II receptor antagonists, typically end in "pril." Orthostatic hypotension is more commonly associated with medications that lower blood pressure broadly and are not specific to ACE II receptor antagonists, which primarily focus on the renin-angiotensin-aldosterone system. Lastly, Cozaar (losartan) is indeed an example of an ACE II receptor antagonist, so the claim about it not being an example is incorrect.