In New York City, the entire subway system shut down due to massive power outage. People who usually took the subway were stranded and had to find alternate transportation. Police provided assistance and directions to the people. The assistance by the police here is an example of:

providing a service

Explanation:

Providing a service can be clearly described or even defined as the act of supporting, assisting or helping out an individual or a group of people in order to ease up stress, make the process easier or have a better understanding of a situation.

The Police provided assistance and directions to the people while the the entire subway system shut down due to massive power outage is an example of providing a service to the people, this will enable relieve of the magnitude of the situation at hand.

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