The decimal representation of \( \frac{6}{11} \) is \( 0.545454... \), where the "54" repeats indefinitely. Using bar notation, this can be represented as \( 0.\overline{54} \).
From the options given, it appears that only the representation "0 0.54" might suggest a repeating decimal (if interpreted as \( 0.\overline{54} \)), but it's not the standard way to denote it.
If none of the options precisely indicate repeating notation, please double-check them; however, the correct repeating decimal representation should be \( 0.\overline{54} \).
If "0 0.54" implies \( 0.\overline{54} \), it could be considered the closest option, otherwise, none appear to correctly represent the repeating decimal.