I thinks its He uses proof to show the evidence is relevant. But im not totally positive on it hope this helps
'Pressure' is (force) / (area).
The only choice with those units is #1 .
4.2 liters..... there are 1,000 mL in a liter and there is a total of 4200 mL in this case which is divided by 1000 which gives you 4.2 liters.
