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 hhs regulations, should the researcher report this event to the irb? no, this does not need to be reported because 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 because the subject recovered. no, this does not need to be reported because the subject had the heart attack when they were home, not at the focus group.

The persians landed in the plains near athens. as their army greatly outnumbered that of the greeks, the greeks hoped to find aid from nearby sparta. a long-distance runner named pheidippides was sent from athens to sparta to request , but the spartans were not able to send more soldiers at the time. regardless, the greeks were still able to win the battle. centuries later, legend developed that a runner had been sent from the battle to athens after the greek victory. after reaching athens, the runner proclaimed, "we are victorious! " and then fell to the ground and died. this legendary story is the inspiration for the modern long-distance runs that are performed today. this passage refers to the events of which battle during the persian wars? a. battle of thermopylae b. battle of salamis c. battle of plataea d. battle of marathon

The process of rocks breaking down and becoming other rocks

To what is the growth of civilization most clearly traced