Select the option which means the same as the group of words given.
One who cannot be reformed or changed

Correct option is C

The correct one-word for the given group of words is (c) incorrigible.
Incorrigible: Someone who cannot be corrected, improved, or reformed. (जिसे सुधारा न जा सके)
Example: He is an incorrigible liar who can never be trusted.
Meanings of the given other options:
· (a) Invincible: too powerful to be defeated (अजय)
· (b) Infallible: incapable of making mistakes (अचूक)
· (d) Indelible: not able to be erased (अमिट)