Which is an example of a spontaneous exergonic reaction? A) Protein synthesis occuring in cells B) Marshmallows catching fire C) Photosynthesis

I think the correct answer from the choices listed above is option B. It is marshmallows catching fore that is an example of a spontaneous exergonic reaction. An exergonic reaction is a chemical reaction where the change in the free energy is negative which indicates the reaction to be spontaneous. It happens without any energy input.