The answer is b. For example, nuclear fusion in the sun (an exergonic process) releases energy as light and heat, and powers the initial steps of photosynthesis (an endergonic process).
Disruptive selection or diversifying selection describes the changes in population genetics where extreme values for a trait are favored over intermediate values.
So according to this definition, the conclusion can be derived as :
The most common circumference(s) to be after 10 generations of diversifying selection will be greater than 2 cm and less than 2 cm.
