I believe the answer is C 78%
Sit in a sauna or steam room for 20 minutes.
Take a detox bath
Take a 20 minute brisk walk every day in fresh air
Eating plenty of fresh and raw fruits and vegetables a day
Every week, she will do 3*8*7 pushups.
This means that is she does 3 sets of 8 pushups per day, she does 24 pushups per day.
When this is multiplied by 7, she will do 24*7 = 168 pushups per week, which is a lot!
A, B AB and O, O being the most useful, because O blood can be given to everyone, but also the most selective, since they can only receive O blood