I think, i dont know for sure, it was John Calvin
Well, all of the mentioned people have brought about important changes (without military support), so A and B are false.
Martil Luther King lived in the the 20th century, so D. is false too. The right answer is C.
Risk behavior is the behavior of individual that may result in negative consequences, risks to life, death, injury, violation etc. It is important for teenagers as during this age of life teens may not have a correct perspective of what is correct for them and what is not.
In the United States, gender identity is usually thought of as binary, whereas in India it is a continuum.
According to this question, in the US, there are two genders - male and female, and you are either a man or a woman based on this distinction. Nowadays, this has changed, and there is a difference between gender and sex (one is chosen, and one is assigned at birth). In India, there are no such things - there are no clear dividing points.