Final answer:
Ecchymosis is an example of a closed wound where tissue damage occurs beneath the skin without breaking the skin's surface, leading to bruising but not external bleeding.
Step-by-step explanation:
An example of a closed wound is B) Ecchymosis. Closed wounds are those where the skin's surface is not broken, so the tissue damage and any bleeding occur beneath the layers of skin. This differentiates them from open wounds, such as abrasions, incisions, and puncture wounds, where there is a break in the skin that allows for external bleeding.
Ecchymosis is commonly known as bruising, where blood from damaged vessels pools beneath the skin causing discoloration but no break in the skin itself. Contrastingly, an abrasion involves superficial damage to the skin, typically due to scraping or rubbing, and a puncture wound involves a penetration of the skin by a sharp object like a nail or needle.