This is blatant injustice done to him.

conceited
contorted
obvious
flagrant

The correct answer is D. flagrant.

Blatant means “openly and obviously wrong or unacceptable.” Contorted means “twisted or bent out of shape.” Obvious means “easily seen or understood.” Flagrant means “very bad or serious.”

In this case, the injustice done to him is very bad or serious, so the correct answer is flagrant.