Final answer:
The correct instrument used to lift the edge of the liver is a retractor, which is designed to hold back organs and tissues during surgery.
so the correct answer is Option 3) Retractor
Step-by-step explanation:
The retractor used to lift the edge of the liver during surgical procedures is called a Retractor. Retractors are surgical instruments designed specifically to hold back underlying organs and tissues, allowing surgeons access to the body parts under operation. A scalpel is used for cutting, forceps are used for grasping or holding tissues, and clamps are used to hold tissues securely or to stop bleeding. Therefore, for lifting the edge of the liver, a retractor is the appropriate tool.
the correct answer is 3) Retractor