Answer: b. -CH_2OCH_3
Explanation: -CH_2OCH_3 has the highest priority according to the Cahn-Ingold-Prelog system used in assigning E and Z configurations of carbon-carbon double bonds
The procedure that Joanne's doctor would suggest to repair her breasts is a plastic surgery. Since she is now healthy, and tumor-free, she wants to have beautiful breasts again and the doctor believes that plastic surgery is going to help her. It will reconstruct her breasts and make them look "normal" again, the way they were before the operation to remove her tumor.
Well if you take the amount of time in each quarter and the multiply that by 4 you will have your answer.
It's basically a characteristic of bacteria that have a cell wall composed of a thin layer of particular substance (called peptidoglycan).