Who fills any vacancy occurring on a committee?

The correct choice is that the appointing power fills any vacancy occurring on a committee. This means that the authority responsible for establishing the committee or appointing its members has the right to designate a replacement when a position becomes vacant. This process ensures that the committee maintains its intended structure and function, as the appointing power is usually familiar with the goals and needs of the committee and can select an appropriate individual who aligns with its purpose.

In many organizations, this allows for continuity and consistency in the committee's work, as members are often chosen based on their qualifications, expertise, and ability to contribute effectively. This approach also helps to prevent any confusion or conflict that might arise if vacancies were filled by other committee members or through different processes.