Answer:
Make to Order
Explanation:
The manufacturing process where customers customise the product they want to buy is known as Make-to-Order (MTO). The customer first places the order and then the company manufactures it.
The buyer can design their product with specifications as per their choice. MTO companies focus on highly customised, low volume expensive goods.
Air plane makers use this strategy because planes are expensive. They follow this strategy because airlines are expensive products.