When numerators are equal, the fraction with the smallest denominator is the largest.<br><br>
&bull; All numerators are 1.<br>
&bull; Compare denominators: 3, 6, 4, 5. Smallest denominator = 3.<br>
&bull; \( \frac{1}{3} \) is the largest fraction.<br><br>
Final Answer: A: \( \frac{1}{3} \)