Final answer:
Conducting a focus group at an advertising agency is a form of market research, used to gather consumer insights to inform advertising strategies.
Step-by-step explanation:
When an advertising agency conducts a focus group of current customers before designing a commercial, this is a form of market research. Focus groups involve bringing together a select group of individuals to gather their reactions and opinions about a product, service, or campaign. This qualitative method is an integral part of developing successful advertising strategies, as it provides insights into consumer perceptions and helps tailor messaging to target audiences effectively.