What was the function of the Tigris river in the Mesopotamia irrigation?

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group. no, this does not need to be reported since it is unrelated to participation in the study. no, this does not need to be reported because two weeks have passed. no, this does not need to be reported since the subject recovered.

What is a capital crime? its not social studies but they don't have criminal justice

Which member of the president's cabinet is most likely to negotiate a treaty with a foreign country? secretary of the interior secretary of the treasury secretary of defense secretary of state