In the reversible reaction CaCO3(s)⇌CaO(s)+CO2(g)which of the following change at equilibrium will lead to more decomposition of limestone?

Addition of small amount of solids doesn’t make a considerable difference in the volume or pressure.But when we decrease the pressure in the container forward reaction favored in given equilibrium and more CaCO3(s will discompose.On decreasing pressure, equilibrium is shifted towards more number of gaseous moles.