Answer:
a. planning
Step-by-step explanation:
The function that Nestle used in this case was planning. Planning is one of the most essential tasks that a manager has to complete. No matter how good a product or an idea is, it is unlikely to be successful if the planning of the product is not done in a well-thought out way. In this case, the management team was successful in designing a plan that correctly addressed the requirements of the market in question.