Which reactions are single displacement reactions

Explanation:

Single displacement reactions  or single replacement reactions are reactions in which one substance is replacing another. The replacement of  a metallic ion in solution by a metal atom higher in the activity series than the metal in solution is one of such reaction. The positions of the elements on the activity series provides the driving force for the reaction to occur:

            A + BC → AC + B

a small container that holds a source of energy a solar cell that captures light energy and converts it into electricity a voltaic cell that uses the oxidation of a fuel to produce electricity

explanation:

c is the answer because when something is left after something evaporates that shows the chemical change.