Answer:
a. make-to-order operation
Explanation:
Make-to-order operation -
It refers to as the business strategy , which allows the consumers to receive the customized goods and services ,according to their wish , is referred to as make-to-order operation .
It is the manufacturing process , where the ideas and taste of the consumers are considered , and the goods are provided according their wish .
Hence , from the given scenario of the question ,
The correct option is a. make-to-order operation .