For the first question, the answer would be D. (It supports the idea that living in a foreign country is the smartest way to learn a new language)
D: Language researchers found that students who lived in a foreign country learned the new language sixty-five percent faster than students learning at home.
The counterclaim is something that counteracts the statement. Therefore, for the second questions, the answer should be B.
B: However, learning to play an instrument has been proven to improve grades and test performance.
Yes because if he were an educated man, he wouldn’t have been discriminated against for being poor and in the lower class.