The given information is followed by two statements, Read them carefully and answer the given questions.

Many parents have pleaded with the administration department of School X to discontinue the rule of wearing ties to school.

(A) The school has kept different coloured ties for different academic scorers as part of their uniform. Thus, the low-scoring children of school feel discriminated.

(B) The sports uniform of the school does not have a tie, anyway. It is to be worn only on Wednesdays.

Many parents have pleaded with the administration department of School X to discontinue the rule of wearing ties to school.

(A) The school has kept different coloured ties for different academic scorers as part of their uniform. Thus, the low-scoring children of school feel discriminated →  this statement says that the low scoring children feel discriminated due to wearing different coloured tie, so feeling discriminated is the reason why their parents pleaded the school to discontinue the rule of tie. This statement strengthens the information.

(B) The sports uniform of the school does not have a tie, anyway. It is to be worn only on Wednesdays → This statement does not strengthen or weakens the information.

Hence, option 3 is the correct answer.