The correct option is A Obedience
The word 'infringement' refers to violation of the term of law.
Option A, review refers to the formal evaluation of something.
Option B, revision refers to the action of emendation or correction.
Option C, relaxation refers to the action of making a law or rule less strict.
Option D, obedience refers to compliance with an order or law.
Thus, according to the meaning, the word 'obedience' is the opposite of the word 'infringement'.