The sewer which received discharge from two or more main sewers, is known as A. A trunk sewer B. An outfall sewer C. A main sewer D. An intercepting sewer

The correct answer is: A. A trunk sewer.

A trunk sewer is a sewer that receives discharge from two or more main sewers. It is a large sewer that carries wastewater from a large area to a treatment plant or to a point where it can be discharged into a body of water.

A main sewer is a sewer that collects wastewater from a smaller area and discharges it into a trunk sewer.

An outfall sewer is a sewer that discharges wastewater directly into a body of water.

An intercepting sewer is a sewer that intercepts surface runoff and storm water and carries it to a treatment plant or to a point where it can be discharged into a body of water.