The purpose of a compressor is to produce high velocity flui
     The purpose of a compressor is to  produce high velocity fluid  produce work  increase pressure of a fluid  decrease the temperature of steam 
  
  Solution
The purpose of a compressor is to (c) increase pressure of a fluid
The function of a compressor is to increase the pressure, and corresponding saturation temperature (boiling point) of the refrigerant vapor to high enough level so the refrigerant can condense by rejecting its heat through the condenser.
 
 Backing up, the vapor compression cycle needs 5 basic components to move heat from inside the refrigerator to the air in your house. First is the refrigerant, which is the working fluid that moves the heat around.

