In one word, we are able to say that the meaning of ‘discrepancy’ is inconsistency. So, since we've got to search out a word which is opposite to the present meaning, the word we are trying to find is ‘consistency’. As we are able to see, this answer is given in option (c). Thus, option (c) is that the correct answer.
> Option (a) is variance. It means variety. it's kind of like the meaning of discrepancy. Something being inconsistent implies that there's a range of facts. For example: The variance in her story was really showing her to be a liar.
> Option (b) is inappropriate. It means something which isn't suitable or appropriate. it's not associated with the given word. For example: She used inappropriate words while speech the teacher and was suspended from school for every week.
> Option (d) may be a word which is comparable to the meaning of discrepancy. Therefore, option d could be a synonym. it's not the alternative of the meaning of discrepancy. For example: She was fired because she was sloppy and inconsistent in her work.
Hence option (c) is correct.