Hello there! "rowdy" would be the correct answer.
Using context clues like "cheering, shouting, and laughter" indicates that it was very loud and kind of obnoxious. It wouldn't be A since corporate is more formal, and it doesn't fit the tone. It wouldn't be C since it does't state that anythings is inherently unlawful or wrong, just annoying. This leaves b and d. It wouldn't be D, since it doesn't really state anything about the party making other people super annoyed. So, B would be the best answer!