Dr. nygard is interested in learning about the immigration experiences of syrian migrants in maine. after surveying 15 migrants in maine, he concludes that all migrants in maine have experienced racism and discrimination since coming to the united states. dr. nygard can the results to other migrants from syria in maine.

Let's look at one sentence in the text above:

"After surveying 15 migrants in Maine, he concludes that all migrants in Maine "...

So, what happened is that he asked a few immigrants a question, and then assumed that the answer is also true for all the immigrants. This kind of reasoning is also known as "generalisation" - so he can "generalise" - that's the correct answer

People,women beliefs,food customs family social along the north and northwest coast there are some springs and aquifers that arab nations but also from india pakistan southeast asia and america

It's most likely choice a, it makes the most sense in my opinion.