I believe the correct answer would be Japan.
Answer:
c. voluntary participation
Explanation:
In the context, Professor Smith conducts a research in the dating behaviors of her college students. She wishes to track the students dating behavior through their entire college careers. So on her first class she explains her research work to the students and does the survey during the class.
Thus in this case, the research has an effect on the voluntary participation of the college students as all the students present in her class was given the survey to complete and they were not asked for their voluntary participation in he survey.
Hence the correct option is (c).
The Aztecs were not as strong as the Inca. They got defeated in war against other tribes many times. The Aztecs were the youngest out of the other 3 main tribes. The Aztecs' main city is built on an island in a Mexican lake named lake texcoco. For more info visit: www.knowledgenuts.com/2013/10/22/the-difference-between-the-Aztec-maya-inca-and-olmec/
I believe the answer is: 3-4 %
The self-help groups that exist in this country mostly established to specifically tackle a certain disorder (such as alcoholic anonymous, support for the suicidals, groups that teach social skills, etc.)
While the rest of the people do not necessarily immune to these problems, a large portion of them choose to rely on drugs to manage their psychological problem.