With which among the following film directors has Robert De Niro collaborated with the most in his career?

Name the blockbuster film based on a famous DC Comics character in which Robert De Niro made this cameo appearance.

This iconic scene is from the acclaimed film Taxi Driver. Which among the following lines of dialogue would you associate with this image?

Name the acclaimed film from which this image has been taken from. This is one among the four movies in which Robert De Niro starred alongside Al Pacino.

For his portrayal of the sportsperson Jake LaMotta, Robert De Niro was awarded the Academy Award for Best Actor. Name the film in which he portrayed this role.