78 seconds is most likely an outlier.
This is because 66, 68, and 70 seconds are all within 2 seconds apart from each other. Whereas 78 seconds is 8 seconds more than 70 seconds making it an outlier.
Insulin regulates the amount of glucose in the body, when glucose level reach a level that is too high, Beta cells release insulin from the pancreas, then fat cells absorb the glucose from the blood stream causing the blood glucose levels to balance out.
b.
The definition of evolution is the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.