Final answer:
The client is most likely developing Diabetes mellitus, a chronic condition characterized by high levels of glucose in the blood. Symptoms include frequent urination, increased thirst, weight loss, and fatigue. The nurse should monitor blood sugar levels and provide education and support.
Step-by-step explanation:
The client is most likely developing a) Diabetes mellitus.
Diabetes mellitus is a chronic condition characterized by high levels of glucose in the blood. It commonly develops in adolescence and is caused by a lack of insulin production or ineffective use of insulin in the body.
Some symptoms of diabetes mellitus include frequent urination, increased thirst, weight loss, and fatigue. The nurse should monitor the client's blood sugar levels and provide appropriate education and support to manage the condition.