Answer:
questionnaire
Explanation:
According to my research on different types of data gathering methods, I can say that based on the information provided within the question it seems that responses were gathered on paper as questionnaire data. This refers to data gathered by asking a certain amount of randomly chosen participants a series a predefined questions and writing each individual's response to each question. Which seems to be the case in this scenario since the researchers invited eight currently insured people to ask them the questions and record them on a piece of paper.
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