The boiling point of water decreases at higher altitudes is due to A. Low temperature B. Low atmospheric pressure C. High temprature D. High atmospheric pressure

The correct answer is: B. Low atmospheric pressure.

At higher altitudes, the atmospheric pressure is lower. This means that there is less air pressure pushing down on the water molecules. As a result, the water molecules have more energy and can move around more freely. This makes it easier for them to escape from the liquid state and enter the gas state, or boil.

The other options are incorrect because:

• Low temperature would cause the water molecules to move more slowly, making it harder for them to escape from the liquid state and enter the gas state.
• High temperature would cause the water molecules to move more quickly, making it easier for them to escape from the liquid state and enter the gas state.
• High atmospheric pressure would push down on the water molecules, making it harder for them to escape from the liquid state and enter the gas state.