Graphite, an allotrope of carbon, is converted into cubic diamond through a process that may take a billion years or longer. a. True
b. False

Sorry i dont understand the question can you rephase it?

The answer to this is the 3rd choice!

Answer is: the equilibrium  shifts toward the reactants, to the left side of chemical reaction.it is because lead(ii) nitrate dissociates in water: pb(no₃)₂ → pb²⁺(aq) + 2no₃⁻(aq).according to lechatelier's principle, the position of equilibrium moves to counteract thechange (more lead cations, common ion), the position of equilibrium will move so that the concentration ofproducts decrease and concentration of reactants of chemical reaction increase.read more on -