Final answer:
The paraplegic client receiving care for an electrolyte imbalance is receiving care at the tertiary prevention level, which focuses on the management and rehabilitation of existing conditions to minimize complications and improve quality of life.
Step-by-step explanation:
The paraplegic client receiving care for an electrolyte imbalance is receiving care at the tertiary prevention level. Tertiary prevention focuses on the management and rehabilitation of existing conditions to minimize complications and improve quality of life. In this case, the client has already developed an electrolyte imbalance, and the care provided is aimed at treating and managing the imbalance to prevent further complications.