The reciprocal of a number is defined as 1 divided by that number. For \( 34 \), the reciprocal would be:
\[ \frac{1}{34} \]
None of the options listed directly represent the reciprocal of \( 34 \).
However, if the options provided were intended to represent the correct form of reciprocal numerically and not literally matching the expression, then none of the options (43, 4 thirds, 4.3, 3.4, or 34) are equivalent to \( \frac{1}{34} \).
The correct answer is not among the provided choices.