Answer:
Homologous
Explanation:
If two or more species share a unique physical feature, such as a complex bone structure or a body plan, they may all have inherited this feature from a common ancestor. Physical features shared due to evolutionary history (a common ancestor) are said to be homologous.
So the dark butterfly camouflages better on the tree. Where as the white one can clearly be seen and identified. A predator will also easily spot it and kill it. The dark butterfly has evolved over time to the color that it is, to best help it survive. This is also shown in the tread on the graph.
Hope this helps!!
Is the letter A) sunlinght and nutrient availability
Milgram found that subjects were more likely to obey in some circumstances than others. Obedience was highest when: Commands were given by an authority figure rather than another volunteer. The experiments were done at a prestigious institution.