Final answer:
A nurse should monitor a client prescribed alprazolam for drowsiness, as it is a common side effect. Alprazolam can cause central nervous system depression and may affect the ability to perform tasks that require alertness.
Step-by-step explanation:
A nurse caring for a client who has a new prescription for alprazolam should monitor the client for various potential adverse effects, including drowsiness, which is common. Alprazolam is a medication that can cause central nervous system depression leading to effects such as drowsiness, which could interfere with a client's ability to perform tasks that require alertness. Other side effects of alprazolam to be aware of include agitation, anxiety, sleep problems, nausea and vomiting, abnormal heart rhythms, low blood pressure, and muscular problems. However, the option most related to alprazolam's common side effects from the choices provided is (c) Drowsiness.