The most effective question for William to ask is:
A research question is an inquiry that informs an in-depth study of a matter.
If the USDA's recommendation about the consumption of dairy products is different from what is currently obtainable, then it will be wise to find out where the USDA sources its guidelines. Â
Option B offers a good research question to solve the matter.
Learn more about research questions here:
https://brainly.com/question/1442162
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