.The base which is used in space ships and submarine is a) Sodium hydroxide
b) Lithium hydroxide
c) Calcium hydroxide
d) All of these

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

; lc

While unproven, it uses facts to support part of a conclusion. it is still factual and has predictive power, however.