I am not sure because I don't study this in school, but I am going with D. private business
US citizens have to serve on a jury when called and should <span>vote in a federal election.</span>
The correct answer is this - <span>this research would not require IRB review because it would be eligible for exemption since the researcher is not interacting with the children and the playground is a public setting.
If the conditions were a little bit different, then his IRB review would also require different results. However, since there is no real interaction with the children, but rather only observation, an IRB review is not necessary in this case and can be avoided.
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