Correct Option: A

The 7 July 2005 London bombings (often referred to as 7/7) were a series of co-ordinated suicide attacks in London which targeted civilians using the public transport system during the morning rush hour. On the morning of Thursday, 7 July 2005, four Islamist home-grown terrorists detonated four bombs, three in quick succession aboard London Underground trains across the city and, later, a fourth on a doubledecker bus in Tavistock Square. Fifty-two civilians and the four bombers were killed in the attacks, and over 700 more were injured.