Worst is superlative. Superlative means the highest form of something - saddest, coldest, worst, etc.
C) We went to hear the man himself speak.
Himself is an intensive pronoun. Intensive and reflexive pronouns end use the object form of the pronoun and end in -self. Intensive pronouns are found immediately after the antecedent. In this case, after "man" because "himself" is intensifying "man".
It means that a clock is broken twice
