Final answer:
Nestlé's introduction of liquid chocolate in India as a strategic response to the melting of chocolate bars exemplifies the management function of planning.
Step-by-step explanation:
When Nestlé faced challenges selling their chocolate bars in India due to the messy melting in high temperatures, they employed an innovation strategy by introducing a liquid chocolate that could withstand the climatic conditions. This strategic move falls under the management function of planning. Planning involves forecasting future conditions, setting goals, and devising means to achieve these goals. This approach requires a comprehensive analysis of the market and its conditions to develop strategies that will overcome challenges and capitalize on opportunities.