I believe the answer is: Imprinting
In psychology, imprinting refers to the phase where individuals become the most sensitive to learn various skills/knowledge.
Imprinting could happen on any age depending on the person, and currently we still haven't figure out a scientific way to predict the period when it should happen
The Germans rounding up the Jews actually wasn't a cause at all, in fact most countries ignored that until almost the end of the war. WW2 started when Hitler invaded the Rhinelands and took over Austria, as well as him building up his army, both of which directly violated the Treaty of Versailles which had ended WW1
Answer:
Answer B Industrialization of an area
Explanation:
Answer A doesn't have enough of an impact on the forest
Answer C While has an effect on the environment doesn't directly relate to deforestation
Answer D Again does have an effect on our environment but isn't the leading cause in deforestation