Answer: Development
Explanation: Development step of new-product development method is level that presents the new product in the marketing world. The distribution and production tasks of particular new product is done.
The departments involved in this stage finance department, marketing department, advertising members ,etc.They perform the task of advertise the product, finance it, distribution strategy of product in market etc.
According to the situation mentioned in the question, the product is at the development stage and because it is being launched in the market with different price and package .