Which type of structure is specifically designed for public gatherings?

The correct answer is Public Assembly Building. This term encompasses various structures specifically designed to host events that involve the congregation of large groups of people. Such buildings are built with appropriate facilities to accommodate audiences, maintain safety standards, and provide access to necessary amenities like restrooms, areas for food and refreshments, and emergency exits.

The classification as a Public Assembly Building is broad, which means it includes not only places like theaters and concert halls but also convention centers and meeting spaces intended for public gatherings. This making it reflective of diverse activities ranging from civic meetings to cultural events, thus aligning precisely with the definition of structures designed for public gatherings.

While convention centers and sports arenas are specific forms of public assembly buildings, the broader term helps encompass more varieties of venues. Community halls, while certainly used for gatherings, often serve smaller, more localized functions rather than being designed primarily for larger public events, making them less fitting for the description in the question.