Correct option is C
Given: 'GRASSHOPPER'
Option (a): HOPE
Letters: H, O, P, E
GRASSHOPPER has all these letters. (Can be formed)
Option (b): SHOP
Letters: S, H, O, P
GRASSHOPPER has all these letters. (Can be formed)
Option (c): GRAM
Letters: G, R, A, M
GRASSHOPPER does not have the letter M. (Cannot be formed)
Option (d): ROSE
Letters: R, O, S, E
GRASSHOPPER has all these letters.(Can be formed)
Thus, correct option is (c).