Answer:
I think the pigment should be chlorophyll
and the product is definitely oxygen and energy
When cells start to swell up with water, Osmosis takes place.
Since the means of reproduction have changed, the population of peacocks would probably start losing their pretty feather colors due to the fact that over time females would be mating with the containing the other trait (and possibly not the pretty feathers). This would then produce offspring with ugly colors but also with the desired trait. This would continue on and on until those with the desired trait outnumbered or possibly extinguished the now unnecessary vibrant feather colors.
I'm pretty sure the answer is B) a biochemical adaptation