If less heating is required to make a liquid boil if the pressure is reduced, then to make a liquid boil more easily when heat is applied, one should?

Answer choices:
- degrees Celsius
 - Evaporation of water
 - absorb light energy
 - heat is produced
 - aqueous solution
 - lower the surrounding pressure
 - evaporative cooling
 - depress neuronal excitability

 

      lower the surrounding pressure    