Final answer:
The correct answer is option b: clonidine, methyldopa, and guanfacine. These are three common alpha adrenergic agonists that interact with the sympathetic nervous system.
Step-by-step explanation:
The student's question asks to name 3 common alpha adrenergic agonists. Among the options provided, clonidine, methyldopa, and guanfacine are correct examples of alpha adrenergic agonists, which means the answer is option b. These medications bind to alpha-adrenergic receptors and can affect the sympathetic nervous system. Clonidine, for instance, is an alpha-agonist commonly used for treating conditions like hypertension and anxiety.
Epinephrine is indeed an agonist at alpha receptors but isoproterenol and dobutamine are not—they primarily act on beta receptors. The other options, such as prazosin, terazosin, and doxazosin, fall under the category of alpha blockers (alpha-adrenergic antagonists), whereas propranolol, metoprolol, and atenolol are beta blockers (beta-adrenergic antagonists) and are known for their role in treating cardiovascular diseases.