B/c they were the first people in canada and started the fur trade also they helped the europeans surive the harsh winters
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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I believe the answer is: <span>a continuous reinforcement schedule; a fixed ratio schedule of reinforcement
</span> a continuous reinforcement schedule refers to the process of reinforcing a desired behavior every time it occurs.
A fixed ratio schedule on the other hand , refers to the process of reinforcing a desired behavior after it occurs several time.
To make coton in the cotton gin and not for slaves to pick it
