How does altitude affect boiling points?

the higher the altitude, the lower the pressure is on the water, less energy needed to break the hydrogen bonds, lower boiling point

the higher the altitude, the higher the pressure is on the water, more energy needed to break the hydrogen bonds, higher boiling point

the higher the altitude, the lower the pressure is on the water, more energy needed to break the hydrogen bonds, lower boiling point

the higher the altitude, the high