C is the correct answer.
On October 26, 2001, President George W. Bush signed the Patriot Act into law after the attacks on September 11th, 2001.
The Patriot Act became famous for its authorization of previously illegal surveillance of US citizens and for the authorization of indefinite detentions for suspected terrorists.
The USA Patriot Act stands for Uniting and strengthening america by providing apporpriate tools required to intercept and obstruct terrorism.
The answer is c