The answer is B. The Jews.
It would be very polite and considerate
Answer: The Committee is concerned in general with issues related to taxes and other income controls and those related to insular property; U.S. bonded debt; customs, collection districts and ports of entry and delivery; deposit of public funds; general income sharing; health services under the oversight of the Committee.
The answer to this question is Longintudinal
Longintudinal research design is a tyoe of ressearch design that involved asking repetitive observations over same variables.
In a lot of cases, longintudinal research could take more than 10 years since the process is really long and repetitive.