Option 1 -> Clumsy refers to being awkward or lacking coordination, not related to appearance or tidiness.
Option 2 -> Dirty means unclean, which is similar to unkempt rather than opposite.
Option 3 -> Tidy means neat, well-organized, and well-groomed, the direct opposite of unkempt.
Option 4 -> Uniform means consistent or identical, not related to the state of tidiness.
Hence, Option 3: Tidy -> "Unkempt" describes something messy, untidy, or disheveled in appearance, while "tidy" describes something neat and well-organized, making them perfect antonyms -> correct