Answer: Focus group reviews.
Step-by-step explanation:
A focus group is used in qualitative research to find out the experiences, opinions, or attitudes of the group being studied. It is carried out with a larger group of three people, who are guided by a moderator who asks the group a series of questions.
This type of study is very common in market research to find out consumer preferences and analyze the market.
In this case, Frederica should do a focus group with a group of her clients to learn more about their preferences.
I hope this information can help you.