Answer:
Micro Marketing
Step-by-step explanation:
Under micro marketing a small set of customers are targeted, and then the service or goods are produced accordingly to meet their demands.
As in the given instance the customer buys tailor made goods, and is customer specific, the marketing is micro in nature.
It is not done through any advertisement or local branding but, through valued customer specific services.
Therefore, correct option is:
Micro marketing.