The correct answer is option B, that is, allopatric speciation.
Explanation:
In allopatric speciation, a species get differentiated into two groups, and each group thrives in isolation of another group. This might take place due to any physical obstruction like a waterway, mountain range, or others that make interbreeding among the two groups impossible.
Due to this each of the separated species evolve distinctly as per the requirement of the habitat and their genetic and physical features.
A chemical reaction which is associated with a release of energy and thus, is associated with a negative free energy change is said to be an exergonic reaction.
An exergonic reaction owing to the negative free energy change is a spontaneous reaction.
The energy that is released in the exergonic reaction is usually observed in the form of heat and light.
The energy is released due to the breaking of the chemical bonds.
Therefore, on burning of the firewood the bonds between the glucose molecules break up which leads to the release of energy in the form of heat and light and this is thus, an example of an exergonic reaction.
