Final answer:
A reaction with a negative ΔG is a spontaneous reaction that will proceed without any external input of energy.
Step-by-step explanation:
A reaction with a negative ΔG is a spontaneous reaction that will proceed without any external input of energy. Therefore, statement (e) is true: the reaction will proceed spontaneously and rapidly.
The negative ΔG indicates that the products have less free energy than the reactants, and the reaction will release energy. This means that the reaction can occur without the need for coupling with a reaction with a positive ΔG.