I assume your question is why does he have to leave the room before the final discussion?
Well, he might have, as an active member of the IRB, a conflict of interest, meaning that he could be biased to vote in favor of his work which is incorrect, as researchers need to be objective regarding what they are studying. The National Academy Press. (2009). On being a scientist: Responsible conduct in research (3rd ed.). Washington, DC: Author. Is a great book you might read to understand the duties of any IRB and its members responsibilities, also the researchers' behavior. On it, is detail why a conflict of interest can guide to the decision of not conducting a certain research, independently of the undeniable reputation of Dr. Jones.
The question doesn’t really make much sense
Answer:
Native Americans were civilized
Explanation:
It refers to five Native American nations—the Cherokee, Chickasaw, Choctaw, Creek (Muscogee), and Seminole. These are the first five tribes that European Americans generally considered to be "civilized". Also the term "Five Civilized Tribes" they used this word in the mid 19th century
Scientists were interested in testing a new technique to prevent slipping on ice one group simply wore boots, while the other group wore socks over their boots.
Option: C
Explanation:
Scientist always try to bring out a new technique to solve out some problems like to prevent or avoid slipping on ice scientist followed a method that is they divide the whole group into two sub parts one having simple boots while other group having socks over boots.
In this way scientist want to watch and experiment the effect of not wearing boots and having boots with socks that affect the slipping over ice. If both the groups wore same shoes then the experiment would not work out properly. Two different techniques must be followed by the scientist.