Which of the following is a point source of water pollution

The following is a point source of water pollution :

Offshore oils wells

Explanation:

Offshore drilling is a mechanical process where a wellbore is drilled below the seabed.Oil platforms that are in the middle of the sea have two ways of transporting the oil to land, depending on how far it is from land. The way of transporting is via oil tankers. Empty tankers sail to the oil platform, get filled up with oil, and sail back to land.Pipelines running from offshore rigs to inland processing facilities can worsen water quality in estuaries and increase the likelihood of oil spills across beaches, according to the report. In addition, toxic waste brought onshore from drilling operations can pollute drinking water and tracts of landDrilling mud or seawater provides the pressure to hold the plug in place while the engineers place a top plug to cap the oil well. Then the well is ready for a production rig to take over. Offshore production rigs work in a similar way to land-based oil rigs.