D. Making up the rules for the game.
Your answer would be the Kidney
The kidney was the first organ to have an artificial replacement; the dialysis machine invented by Kolff in the 1940s.
The FDA is the U.S Food and Drug Administration
I would say 1,2,3 if that’s not right then all 4
sets are how many times you will do a certain exercise. like bench press you might do three sets by 5 times. so you would do 5 reps thats one set then another 5 reps and thats 2 sets and so on
