Note: This item was originally a drag-and-drop exhibit with no answer choices captured in the source file and no correct answer recorded. It has been rebuilt below as a standard multiple-choice question so that a correct answer and rationale could be provided. Nurses' Notes: The client called the clinic reporting fatigue, muscle weakness, and diarrhea. Appointment made for 1000 today for evaluation. History and Physical: The client is a 28-year-old female with a history of polycystic ovary syndrome (PCOS). She takes spironolactone for the PCOS, as well as a multivitamin and melatonin. She does not smoke or use drugs but drinks 1 to 2 glasses of wine in the evening. Based on the data, which electrolyte imbalance is this client most likely experiencing?