Which is a vaild velocity reading for an object

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Suppose you were the commissioner of corrections for your state. which correctional activities might come within your domain? which mostly would not