Answer:
2. Serum calcium level 13.8 mg/dl
Step-by-step explanation:
Based on the information provided that the client has multiple myeloma and also experiences immoderate thirst and constipation, there is the possibility of serum calcium in his system. This is because a serum calcium level of 13.8 mg/dl is known to cause several medical conditions such as immoderate taste, dehydration, confusion, and constipation.