Answer:
Social
Explanation:
Social defines the status in a society or in a company and where we are living in the society interacts with the people to enhance our status, skills, etc.
Therefore according to the given situation Brooke and Katie went for purchasing to buy cleaning supplies. Here Katie is comparing the products price with local store while Brooke selects well known brands.
In this scenario Brook makes understand to Katie that local product is not good in comparison to well know brand. So, social factors affects on Brooke choice.