Which of the following would most likely scientists conclude that kidney disease can result from not drinking enough water?

a. inventing new machine that maintain excretory function when a patient is in the hospital

b. comparing the rates of kidney disease reoccurrence in recovering patients who increased their daily water intake vs. those who did not increase their daily water intake

c. asking whether the climate of a kidney-disease patient affects the likelihood of contracting a bacteria that enters the kidneys

d. reading studies about how dehydration affects the functions of the circulatory system and comparing them to studies about dehydration and the respiratory system

B. comparing the rates of kidney disease reoccurrence in recovering patients who increased their daily water intake vs. those who did not increase their daily water intake.

A dehydration can be defined as a condition in which the excessive loss of the body water occurs in the body through sweating, diarrhea, loss of excess water through urine. The loss of water disturb the blood pressure, electrolytic balance, may bring the body in the hyovolemic state and may also cause heart and kidney failure.

Comparing the rates of kidney disease reoccurrence in recovering patients who increased their daily water intake vs. those who did not increase their daily water intake is the correct answer because it is a comparitive study which may show the direct impact of water on the kidney patients. This proves that water is necessary in the recovery of the kidney diseases.            

sorry, but you do not have posted the diagram.