Concept:The tool in the diagram is a pincer-like instrument used for bloodless castration of animals.Explanation:A burdizzo has long handles and blunt crushing jaws.It is used to crush the spermatic cord without cutting the skin.This makes it different from an elastrator, which uses rubber rings, and from dehorning or semen-collection tools.Therefore, the illustrated tool is a burdizzo.Answer:B. a burdizzo