Final answer:
Conn's syndrome (Primary Hyperaldosteronism) is the disease characterized by a tumor of aldosterone-secreting cells in the adrenal cortex.
Step-by-step explanation:
The correct answer is c. Conn's syndrome (Primary Hyperaldosteronism). Conn's syndrome is a disorder characterized by the overproduction of aldosterone hormone by the adrenal glomerulosa cells. This results in excessive sodium and water retention, leading to high blood pressure and low potassium levels. The tumor of aldosterone-secreting cells in the adrenal cortex causes this condition.