What does the word "vociferous" mean?

The word "vociferous" specifically describes someone or something that expresses feelings or opinions in a loud, forceful, and noisy manner. When referring to a person, it suggests a noticeable and often clamorous way of speaking out, typically in support of a cause or expressing an argument. This quality is in stark contrast to the other choices, which imply a more subdued, quiet, or gentle demeanor. Therefore, "loud and noisy" aptly captures the essence of what it means to be vociferous, highlighting the characteristic of being outspoken and boisterous in communication.