A close bottle containing water at room temperature was taken to the Moon and then the lid is opened. The water will
- not change at all
- decompose into oxygen and hydrogen
Liquid water can only exist because it requires an atmospheric pressure pushing the water molecules back together. Otherwise it only exists as a frozen or gaseous state.
If you happened to open a bottle of liquid water on surface of the moon, that implies it has some heat and air pressure beforehand in order to remain liquid. In order for that heat to dissipate, the water would boil and vaporize.
The correct option is A.