Answer:
C. Private brands.
Explanation:
-Generic brands refer to products that doesn't have a recognized brand and are similar to more expensive products of the same category with a lower price.
-Co-brands is when several brands make a collaboration to create a product.
-Private brands refer to goods that are produced by a retailer.
-Private labels are products that are manufactured by one company and are sold by another one.
-Manufacturer's brand is when a manufacturer sells a product using its name.
According to this, the answer is that these brands represent private brands because they are owned by the retailer.