Concept:The noun form of a verb expresses a state or action as a thing.Explanation:'Deaden' is a verb meaning to make dull or less intense. The noun related to this idea is 'death', which means the state of being dead. 'Die' is primarily a verb, while 'deathly' and 'deadly' are adjectives. Therefore, among the options, only 'death' is a noun.Answer:The correct answer is Death (Option A).