Which wound would bleed the most severely contrusion abrasion incised or laceration?

The wound that would bleed the most severely is a laceration.

A laceration is a deep cut or tear in the skin, often caused by a sharp object such as a knife or broken glass. Because the skin is torn and not just bruised or scraped, lacerations can cause significant bleeding. The amount of bleeding depends on the size and depth of the laceration, as well as the number of blood vessels that are damaged.