If you are trying to reduce the stress of a project it is best to take a break from the project when you need it then come back to it when your ready so i would say the answer is B.
I think it is natural selection. genetic variation also could be a factor for physical variation over the years.
Well... It wouldn't be effective as it is a synthetic progestin meant to cause menstrual bleeding and ovulation... The thing is that because that would take four more weeks to happen again, so it would be ineffective.
The mini pill which is essentially the same thing and is Progestin is to be taken everyday and has a 90 effectivity rate.
"You assure them that, as the parents, they are the appropriate decision makers for their baby and you will support their decision."