A lack of Vitamin D is said to be detrimental to the maintenance of bone density. If a scientist wanted to determine whether this view was supported by scientific evidence, which of the following would be the best method of doing so?
A. Carry out a survey of people with normal bone density to find out whether they take Vitamin D tablets or not.
B. Compare the bone density of two groups of people with low bone density after providing only one of the groups with Vitamin D.
C. Compare the incidence of people with low bone density in two different populations.
D. Carry out an experiment in which a group of people with normal bone density are exposed to very little sunlight to prevent the production of Vitamin D.
Answer (3)
D is also a good option because when their little production of vitamin D we can easily determine what is the effect of this experiment to the bone density...
i would do B because then you can compare people who do take Vitamin D to people who don't and then you can see who has better bones and the effects.
The best method for a scientist to determine if a lack of Vitamin D is harmful to bone density is to conduct a controlled experiment using two groups of individuals with low bone density—one receiving Vitamin D and the other not. This approach allows for direct comparison and reliable results. Thus, option B is the most suitable choice.
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