What are the formal acts that are performed on public occasions called?

The term "ceremonies" specifically refers to formal acts performed during public occasions. These can include events such as graduations, wedding ceremonies, state functions, and other significant gatherings marked by structured protocols and traditions. Ceremonies typically carry cultural or social significance, embodying specific meanings that are recognized and revered within a community or society. They may involve various elements like speeches, performances, or the wearing of ceremonial attire, which enhance their formal nature.

While the other options may seem related, they do not encapsulate the formality and tradition inherent in the concept of ceremonies. For example, rituals often imply a set of actions performed in a customary way, but they may not necessarily be tied to public occasions. Events can refer to any organized gatherings, formal or informal, without the specific connotation of structured ceremony. Functions are broader as well and may not always imply a formal nature or public display. Therefore, "ceremonies" is the term that best captures the essence of formal acts occurring on public occasions.