For the following reaction:

A + 3B �¨ 4C

Which of the following provides the direct link between the amount of reactant A and the amount of product C?

2 answers

You didn't provide any choices but the correct answer is the coefficients for A and C. The balanced equation tells you that 1 mol A will produce 4 mols C IF there is enough B present.
the coefficients provide a direct link