Answer:
Part A: A control group would add in a datapoint that didn't receive any medicine, letting you know if the medicines actually work.
Part B: Split evenly. This makes sure you have enough data for each group.
Part C: By breed. Which sanctuary they come from wouldn't seriously impact their anatomy like which breed they are would.
It's about 83.544 sorry if I get it wrong I'm really sorry I add
Each 7 inches of the tv are equal to one inch of the phone. Therefore Divide 56 by 7 you get 8 56/7=8