According to the observations of a nutrition scientist,laboratory mice are healthier when their diet contains physiological levels of vitamin D than when their diet lacks the micronutrient.The scientist hypothesizes that mice will be less likely to develop cancer when they consume a diet that supplies megadoses of vitamin
A)plan a retrospective study involving at least 5,000 laboratory mice to test the vitamin D and cancer hypothesis in mice
B)design a double-blind study to test the vitamin D and cancer hypothesis in mice
C)set up an experimental epidemiological study to test the vitamin D and cancer hypothesis in mice
D)conduct a controlled laboratory experiment to test the vitamin D and cancer hypothesis in mice
E)Based on this information,the scientist is ready to ______.

Question

Quizplus · Accepted Answer

The best choice is to conduct a controlled laboratory experiment to test the vitamin D and cancer hypothesis in mice. This will allow the scientist to control for other potential variables and observe the specific effects of megadoses of vitamin D on cancer development in mice. A retrospective study (A) would not be useful for testing causation and a double-blind study (B) may not be feasible in this case since it involves animal subjects. An experimental epidemiological study (C) may not be necessary since the study is focused on a specific population (laboratory mice) and does not require analysis of larger populations. Finally, there is no indication that the scientist is ready to publish or make any conclusions, so (E) is not a valid answer.

According to the Observations of a Nutrition Scientist,laboratory Mice Are