Light houses are places with powerful lights to : A. Guide and resolve traffic jams in crowded metro-cities during nights B. Guide and help large crowds at religious gathering during nights C. Indicate to the incoming warships, the location of a harbour during night D. Guide and warn the ships coming from different directions in the ocean

The correct answer is D. Light houses are places with powerful lights to guide and warn the ships coming from different directions in the ocean.

Option A is incorrect because light houses are not used to guide and resolve traffic jams in crowded metro-cities during nights. This is because light houses

Option B is incorrect because light houses are not used to guide and help large crowds at religious gathering during nights. This is because light houses are usually located in remote areas, far away from religious gatherings.

Option C is incorrect because light houses are not used to indicate to the incoming warships, the location of a harbour during night. This is because light houses are usually located in remote areas, far away from harbors.

Light houses are typically tall towers with a powerful light at the top. The light is often turned on and off in a pattern that can be seen from far away. This helps ships to navigate safely through the ocean at night.