Patriot Day in the United States is observed for which of the following events?

• A. Hijack of US Flight 93
• B. Hurricane Sandy
• C. 1993 World Trade Centre Bombing
• D. 9/11 terror attack

Answer: (D)

The United States observed the 21st anniversary of the deadly 9/11 attacks. Patriot Day is marked every year on September 11 in memory of the people killed in the terror attacks.