Answer: Focused differentiation strategy
Explanation: In focused differentiation strategy the focus of the entity providing the service is to make their product suitable and as per the expectations of the target market , which is very narrow in size and the requirements of the customers are very unique in such kind of target markets.
In the given case, as we know that vegetarian food is not very popular among the college students, since the preference towards health is usually seen in the age group of 25 to 35 working individuals.
Thus, the customer base of amy is very narrow.
Hence, we can conclude that Amy's is using focused differentiation strategy
