The correct answer from the drop-down menu is a survey, this is because the type of data you are interested in is more subjective and open-ended.
To find out what types of product-related problems its customers are experiencing we need to investigate about the problems faced by customers by means of collecting data from a sample of population.
In this case, we have that a survey is a data collection of questions used to gather information about population.
See more about survey method at brainly.com/question/17373064
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