Final answer:
The false statement about exergonic reactions is that they absorb heat from the surroundings; in fact, they release energy into the surroundings.
Step-by-step explanation:
The statement that is not true about exergonic reactions is "C) Absorb heat from the surroundings." Exergonic reactions are characterized by a release of energy and typically involve a negative change in free energy (ΔG), indicating that the products have less stored energy than the reactants. These reactions are spontaneous, meaning they can occur without the addition of energy into the system; however, they may require an initial input of energy called activation energy. Contrary to what is implied by the term spontaneous, these reactions do not necessarily happen quickly but rather without an ongoing input of energy, such as the rusting of iron.