which of the following describes a similarity between a liquid and gas A. both are forms of heat are used to warm objects. C. both are forma of non-matter that move objects B. both have a definite shape and take up space D. both have parts to small to be seen with the eye?? HELP PLEASE

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)