Manila Water, the provider of the water and sewerage services in the capital of the Philippines has purchased the government owned water and sewerage system for the entire country. It promises to make the nation's water and sewerage system run as efficiently and profitably as the one it operates in Manila. Its primary challenge will be the management function of $\_\_\_\_$ because it needs to convince the $2,000$ employees it inherited from the government$-$owned facility to work more efficiently.

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organizing

controlling

communicating

planning

leadership