To make freeze-dried coffee, you would spray drops of coffee into a vacuum chamber so that__
a. the water would freeze, which would condense the water even further
b. the water would freeze, which would cool the coffee until it boils. once it boils, any remaining water molecules would evaporate.
c. the water would boil off, which would cool the coffee until it freezes, any remaining water molecules would evaporate.
d. water would boil off, which would warm the water even further.