If in a code language, 'Red' is called 'Green', 'Green'

Solution

According to the given code language: • 'Red' is called 'Green' • 'Green' is called 'Pink' • 'Pink' is called 'Brown' • 'Brown' is called 'Violet' So, according to this code language, the color 'Red' is called 'Green'. In traffic signals, the color used to stop vehicles is 'Red'. Therefore, according to the code language, 'Red' is called 'Green', which means the color used to stop vehicles on a traffic signal is 'Green'. So, the correct answer is option 2.