Answer:
The feedback from the teen boys and girls was gleaned via empirical data.
Explanation:
Empirical data is data that is collected from the research subjects themselves and that functions as evidence of a certain phenomenon or social problem. It is data that the researcher in some way observed, assessed, or measured. Surveys are a common technique used by researchers in trying to gain insights into what a population thinks or feels about a product, for example. Other empirical research techniques for gathering data are interviewing and focus groups.