All of the ancient civilizations were close to a major water source.
All of them practiced agriculture in order to provide enough food for their civilization.
All of them had some sort of irrigaiton in place in order to water down he fields.
All of them lived in socially stratified societies where a ruler was present.
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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Answer:
More, had a comparative advantage, produce more
Explanation:
In the previous example, the United States and Brazil were efficient when they specialized. Brazil choose to specialize in the production of bananas because it in producing it. The United States and Brazil when they specialize.
Robert Pershing Wadlow at 8'11"
Answer:
Guards would stand on the streets stopping thieves or couriers. I would also see men doing hard labor and work difficult jobs. The women in my household clean and cook inside. Villagers headed to the market to trade goods such as food, cloth and metals.
Explanation:
Hope this works out!
