The solution is 2. -3+5=2
It should be a.), all plant cells have a cell wall made of cellulose, which acts as exoskeleton and makes them so stable. However on a bigger level this plant cells can also form cellulose fibers, so that c.) is not completely false :)
(4 times 4 times 5) + (5 times 10 times 8) = 480 in cubed.
32 cups
It is thirty two cups because that’s how many are in 2 gallons