I believe the answer is: <span>prisoners and guards
The purpose of study is to find out how human would behave when given complete authrority towards other humans.
As it turned out, the participants who were assigned as guards started to use their power to abuse the participants who were assigned as prisoners, and researchers were forced to stop the experiment.</span>
<span>He buys a new sports car every year, lives in the biggest house in his neighborhood, and always buys the most expensive clothes he can find. According to ... Failure to resolve conflict at a particular stage of psychosexual development may lead to failure to move forward psychologically, a phenomenon that Freud called</span><span>
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From the given options, the surveys, tests related to education, and unidentified questionnaires all belong to exempt research.
The fourth option is the correct answer.
<h3>What is meant by research?</h3>
Research is defined as the analysis of facts by examining the sources and available material about any topic.
Exempt research is one of the methods that focus on the study of human-related concepts where there is a minimum or no risk involved. The categories which are treated as exempt research can be education concepts, surveys, interview processes, federal-related research, food and taste studies, etc.
<u>Question's missing part:</u>
The following are the options related to the given question:
1) fraudulent research
2) non-ethical research
3) laboratory research
4) exempt research
Therefore, the provided categories are considered to be exempt research.
Learn more about the research in the related link:
brainly.com/question/18723483
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Explanation:
crops needs Air, water and sunlight in it's environment
One problem resulting from urban areas growing is that family-farms are being sold out, and that affects the communities around it. And second, it affects the natural enviorment with pollution, no matter how many laws there are. Take L.A. for example, at times it can be very smogging. You see it in the sky but not many people speak out against it. It proabably was once a little town too.
