C. to convey a certain tone.
These are just two out of many:
- language shift: Today, a significant proportion of America speaks Spanish, which replaced the indigenous languages spoken there
-religious shift: also Catholicism replaced previous beliefs.
Answer: The correct answer is : The myth is that a greater number of birth defects would be caused.
Explanation: Nancy Thornhill conducted a sample study of 129 societies where she discovered that the most common incest taboo was among cousins. Massachusetts Governor Briggs delegated a commission to study "idiots" in the state and one of the factors responsible for idiocy is cousin marriage, also a study between deaf and mute in Kentucky yielded the same results, adding blindness.
Most likely A because immigrants had the advantage of Settlement Houses. Settlement Houses were places of not necessarily refuge, but of shelter and protection where they were taught by Americans themselves about the culture and ways of the U.S. I'm sure they learned things from other immigrants here and there, too, but culture classes were what they write about in textbooks.