Final answer:
Surveys use questionnaires to collect information about study participants.
Step-by-step explanation:
The research method that uses questionnaires to collect information about the participants in a study is survey. Surveys involve asking participants a series of questions, which can be administered either in person, over the phone, through email, or online. This method allows researchers to gather quantitative data and analyze the responses to draw conclusions and make generalizations about a population.
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