The Patriot Act allows police to install Internet pen registers without demonstrating probable cause that the suspect is engaged in a criminal activity. By revealing the URLs of Web sites visited by a suspect, a pen register is a much more powerful surveillance tool on the Internet than it is on a telephone network. Your answer would be, Letter Choice (A), By using electronic surveillance of suspected terrorists.
Hope that helps!!!!! :) (Answer: Letter Choice (A), By using electronic surveillance of suspected terrorists.).
