Which type of chemical reaction would most likely proceed spontaneously?

a. anabolic

b. endergonic

c. exergonic

d. metabolic

exergonic It is a chemical reaction

It would be exergonic because it's reaction is a chemical reaction where the change in the free energy is negative (there is a net release of free energy), indicating a spontaneous reaction. These reactions usually do not require energy to proceed, and therefore it would occur spontaneously.