When finding the average of each group, consider difference from the total average, rather than the actual number, so that we need to add and subtract smaller numbers.  E.g. Deepak's average score for PCB is 98, overall average is 96, so this is +2 (98-96).

Similarly Maths is -1, social science -0.5 (95.5-96), vernacular -1 (95-96), let English be x. This should add up to 0.

+2 - 1 - 0.5 - 1 + x = 0, so x is +0.5. So English average is 96 + 0.5 = 96.5. So, paper 2 score is 97, option (c)