Answer:
A - Ingenious
Explanation:
Ingenious means clever, original, and inventive and ingenuous means innocent and unsuspecting.
If researchers report data from a study where they hired experimental confederates. The type of research design did they use is: naturalistic observation.
<h3 /><h3>What is research?</h3>
Research can be defined as the data or information collected by a researcher so as to reach or draw a conclusion.
Most researcher tend to make use of naturalistic observation research method because it help to effectively observe behavior as well as subjects in their natural environment.
Therefore the type of research design did they use is: naturalistic observation.
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Learn more about research here:brainly.com/question/968894
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I believe it encouraged them to try and do a trading route with them
