&lt;!-- KEY CONFLICT: stored index=0 (3/20), computed=17/80 (not among options) --&gt;<br>
Perimeter of a square = 4 × side.<br>
Side = perimeter ÷ 4.<br><br>
&bull; Side = \( \frac{17}{20} \div 4 \)<br>
&bull; \( \frac{17}{20} \div 4 = \frac{17}{20} \times \frac{1}{4} = \frac{17}{80} \)<br>
&bull; 17 is prime and does not divide 80, so \( \frac{17}{80} \) is in simplest form.<br><br>
Final Answer: \( \frac{17}{80} \) m<br><br>
Note: The computed answer \( \frac{17}{80} \) does not match any of the given options. The options may contain a data-entry error.