Final answer:
Mr. Jones understands the chronic kidney disease information when he mentions limiting his fluid intake, aligning with preventive strategies to manage kidney health.
Step-by-step explanation:
Mr. Jones shows an understanding of chronic kidney disease management when he states, "I'll limit my fluid intake to 2 liters a day." This statement aligns with the preventive strategy of managing fluid intake to reduce the excretory load on the kidneys. In contrast, option A (skipping medications) would be detrimental to managing his condition, and option C (avoiding exercise) and D (a high-protein diet) are not recommended; especially a high-protein diet is to be avoided since a low-protein diet is typically advised to lessen the burden on the kidneys.