Question

soon after ying li hit his thumb with a hammer, a collection of blood formed beneath the nail. this condition is a subungual select select hematoma purpura depigmentation ecchymosis

Explanation:

A subungual hematoma is a collection of blood beneath the nail following trauma like hitting the thumb with a hammer. Purpura refers to bleeding into the skin or mucous membranes. Depigmentation is loss of skin color. Ecchymosis is a larger - sized bruise. The described condition is a subungual hematoma.

Answer:

hematoma