Which type of committee is appointed for a specific task and goes out of existence when the task is completed?

A special committee is formed to address a specific issue or task and is dissolved once that task is completed. This type of committee is designed for a particular purpose, such as conducting research, organizing an event, or resolving a temporary problem, and its existence is temporary, only as long as it is needed to fulfill its specific objective.

In contrast, a standing committee is established on a more permanent basis to handle ongoing responsibilities and oversee certain areas continuously, while an advisory committee typically provides recommendations and guidance without being tasked with carrying out specific duties. A permanent committee is synonymous with a standing committee, as it also exists indefinitely to address ongoing matters. In summary, the defining characteristic of a special committee is its transient nature, which directly aligns with the task-oriented structure the question highlights.