'Consummation' means the act of making something complete or perfect.
Option A - 'Devouring' means an something that is extremely strong and usually causes damage. Thus option A is incorrect.
Option B -'Forgiveness' means the act of forgiving. Thus option B is incorrect.
Option C - 'Failure' means the fact of someone or something not succeeding. Thus option C is incorrect.
Option D - 'Completion' means the act of finishing something that you are doing or making. Thus option D is the correct answer.
'Consummation - Completion'