Answer:
B. product
Step-by-step explanation:
The marketing mix refers to a marketing strategy that involves four types of Ps i.e. product, price, promotion, and place
The product is the beginning point for developing a marketing mix as without product no organization could able to set the prices, no promotion took place nor any location could be set
Also the product should be decided by the company which type of product should be launched by considering all rivals in the market place
Therefore, the option B is correct