This is a question with answer options. What kind of thing would the answer to the question "What famed gangland slaughter cut into the membership of Bugs Moran 's outfit ?" be an entity, an abbreviation, a description, a human, a location, or a numeric value?

Choose your answer from:
[a]. description.
[b]. entity.
[c]. abbreviation.
[d]. human.
[e]. numeric.
[f]. location.
[b].