Answer: brand extension
Explanation:
Brand extension is also referred to as brand stretching. It is a marketing strategy whereby a particular firm uses the image and brand of a well known company or an existing company to market its product. The brand name is typically used for a product category that's different.
For example, from the question, Caribou Coffee Company is a company that is known for their coffee products, but recently it introduced new granola bars which is another product. This is done usually to increase sales.
