Unit Test — Unit test

Question 9 • Biology - SC3209 B-IC

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

Answer

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

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

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

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

Explanation

To test whether not drinking enough water contributes to kidney disease, scientists should compare kidney outcomes for people who drink more water with outcomes for people who do not. Choice B makes that comparison among recovering patients and focuses on whether the disease returns. The other choices do not directly compare water intake with kidney-disease outcomes.

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