The backpack for which Kendra is spending considerable amount of time selection the best alternative, represents Shopping.
D. shopping
Explanation:
A shopping product is the product for which the consumer may spend considerable time to consider the different alternatives available in the market and the other options available for the similar product.
The consumer may research and then choose the best deal available in the market which sells the product in comparatively lower prices. Therefore, here Kendra's backpack represent shopping product which has many alternatives in the market and Kendra will choose the best deal available.