The commonly used biomaterial for making artificial heart is1 pointPolyurethaneSiliconePolyacrylonitrilePolyvinylchloride

The commonly used biomaterial for making an artificial heart is Polyurethane.

Here's why:

1. Polyurethane is a type of polymer, or plastic, that is known for its durability and flexibility. These properties make it an ideal material for use in medical devices, including artificial hearts.

2. Polyurethane is also biocompatible, meaning it can be used in the human body without causing an adverse reaction. This is crucial for any material used in an artificial heart, as the device must not cause any harm or discomfort to the patient.

3. Finally, polyurethane is resistant to wear and tear, which is important for a device like an artificial heart that needs to function continuously and reliably.

Therefore, due to its durability, flexibility, biocompatibility, and resistance to wear and tear, polyurethane is the commonly used biomaterial for making artificial hearts.