What is the more commonly known name of the National Commission on Terrorist Attacks Upon the United States?

The National Commission on Terrorist Attacks Upon the United States is more commonly recognized as the 9/11 Commission. This commission was established in 2002 to investigate the circumstances surrounding the September 11, 2001 terrorist attacks, assess the government’s response at various levels, and make recommendations for preventing future attacks. The name "9/11 Commission" is widely used in media and public discourse because it succinctly references the date of the attacks, making it more memorable and relevant to the events it investigated.

The other options refer to different entities or initiatives that focus on security, intelligence, or defense but do not encompass the specific investigation and findings related to the September 11 attacks and their implications for national policy.