Answer:
I dont anderstand your question
Answer:
B. Not be approved because he has violated the ethical standard of confidentiality/privacy
Explanation:
Confidentiality and privacy protects peoples view, opinions and choices. Telling them to keep their answers opening and leaving the answers there for some time before going to take them violates their privacy. This is because anyone from among the group can go there and pick any paper and even see the other person's view and answer about geography. Something that should be for John's Eyes only for his experiment.
I believe the answer is :Random sampling
Random sampling refers to select a group of subjects that could be used as sample for a research from a large population. The selection is beind done without any criteria in hope that the sample at least represent the general composition of the population.