The correct answer is (b), Slumdog Millionaire.
Slumdog Millionaire is a 2008 British drama film directed by Danny Boyle, written by Simon Beaufoy and produced by Christian Colson. The film is based on the 2005 novel Q & A by Vikas Swarup. The film follows Jamal Malik, an 18-year-old orphan from the Juhu slums of Mumbai, who appears on the Indian version of Who Wants to Be a Millionaire? and becomes a national sensation when he makes it to the final question. The police arrest him on suspicion of cheating, and he recounts his life story to the police inspector in order to prove his innocence.
Slumdog Millionaire was a critical and commercial success, winning eight Academy Awards, including Best Picture, Best Director, and Best Adapted Screenplay. It also won seven BAFTA Awards, four Golden Globe Awards, and five Critics’ Choice Movie Awards.
The other options are:
(a) Mall E is a 2008 American science fiction action film directed by Joe Johnston and written by John August. The film stars Jason Bateman, Jennifer Connelly, Ginnifer Goodwin, Joel Edgerton, and Edgar RamÃrez. The film follows a group of people who are trapped in a shopping mall after it is invaded by aliens.
(c) The Dark Knight is a 2008 superhero film directed, produced, and co-written by Christopher Nolan. Based on the DC Comics character Batman, the film is the second installment of Nolan’s The Dark Knight Trilogy and a sequel to 2005’s Batman Begins, starring Christian Bale and supported by Michael Caine, Heath Ledger, Gary Oldman, Aaron Eckhart, Maggie Gyllenhaal, and Morgan Freeman. In the film, Bruce Wayne / Batman (Bale), Police Lieutenant James Gordon (Oldman) and District Attorney Harvey Dent (Eckhart) form an alliance to dismantle organized crime in Gotham City, but are menaced by an anarchistic mastermind known as the Joker (Ledger) who seeks to undermine Batman’s influence and create chaos.
(d) The Reader is a 2008 German-British drama film directed by Stephen Daldry and written by David Hare. It is based on the 1995 novel of the same name by Bernhard Schlink. The film stars Kate Winslet, Ralph Fiennes, and David Kross. The film follows Michael Berg (Kross), a 15-year-old boy who has an affair with an older woman, Hanna Schmitz (Winslet), who is a Nazi concentration camp guard. Years later, Michael is a law student when he recognizes Hanna as a defendant in a war crimes trial.
I hope this helps!