The average marks for all the students is 38 . Sum =5×38=190 To find the minimum marks scored by Amit, we need to maximize the score of remaining students. Maximum scores sum of remaining students =50+49+48+32=179 Minimum possible score of Amit =190−179=11 It is given, Amit scored least. This implies maximum possible score of Amit is 31. Difference =31−11=20 The answer is option D.