Aprice support is a type of price fixing price floor rent control price ceiling

Subsidy

A price support is a type of subsidy. It seems that this is not given in the choices. However, subsidy is a form of monetary or financial support which is provided by a local or state sector. It aims to provide economic and social stability and development. Hence, subsidy encompasses various types of support funded by either government or non-government offices. It can be given in form of either direct (money, incentives and etc.) or indirect (insurance, write-offs and etc.) in procedures.  

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)