The most important observation is the conversion of of electrical energy into light energy which performs the function of a lamp.
In addition to this there is a considerable amount of energy loss in form of heat energy. When the electrical lamp is there is production of a significant amount of heat energy. As a result of this the entire energy in form of electrical energy is not converted into light energy
Condensation goes with A.
Evaporation goes with C.
Sublimation goes with B.
Freezing goes with D.
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