One evening, after sunset, Anil and Gopal were standing in a park with their backs towards each other. Anil's shadow fell exactly to his left side. Which direction was Gopal facing?
Correct: A
In the evening, after sunset, the sun is in the West. Therefore, shadows fall towards the East.
Anil's shadow fell exactly to his left side. This means Anil's left side is East.
If Anil's left side is East, then Anil must be facing South (because if you face South, East is to your left and West is to your right).
Anil and Gopal were standing with their backs towards each other. If Anil is facing South, then Gopal must be facing the opposite direction, i.e., North.