Dr. xiong thinks that people who drive red cars often violate the rules of the road. he sets up a hidden camera at a four-way stop sign to see which cars fail to make complete stops. dr. xiong is using the method of research.

Explanation:

This method of research is used in social science most of the time, because consist in observing subjects in their natural environments, without manipulating variables like experimental or quasi-experimental methods do.

So, in this case, Dr. Xiong is using the method properly, because in his case, he needs to observe people without interfering.

unless they converted, many non-christians (mainly jews and muslims) were persecuted

answer; i believe its (transgender);