Answer: Micro-marketing
Explanation: Micro-marketing is a marketing approach or strategy which is aimed or targeted towards a specific or particular group. Micro-marketing strategy does not focus on providing services or goods to a very large group but rather a defined group of clients with special needs or demands. Customers or clients can be streamlined by offering services based on characteristics such as gender, class or special needs.
Micro-marketing is a strategy which thrives really well in a competitive market which enables an organization or industry stand out when among it's competitors.
In the scenario above, cakes designed based on taste and style is a Micro-marketing strategy which can be employed by bakery owners to stand out among competitors.