Out of sodium, rubidium, aluminum, and indium which is the most reactive metal

The answer should be vaporization 

Sorry i dont understand the question can you rephase it?

Of course: ) what’s your name ?

Ithink that the use of creativity in the sciences entails that one produce something out of nothing or from another thing. with this, i think that the he wrote down his results as four parts of the atomic theory is the manifestation of the  creativity of john dalton.