D. Keeping your facility in good condition
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I believe the answer is: No, this does not need to be reported because it was assessed by the researcher as unrelated to the research study.
uanticiapted problem refers to the unexpected event that happen to the subject which is caused by the subject's involvement with the study. (This usually covers all form of physical harm and psychological damage that occurs because of the method of study or the substance that given to them during the study)
To provide drill in skills and concepts already introduced
They did so through the Bering Strait. At the time the Strait was either frozen over, so they could walk, or it was very shallow so they could cross it in simple boats and by island hopping.
