Count the total number of equal parts and the number of parts already shaded. Compare with the fraction \( \frac{1}{2} \).<br><br>
• The figure is divided into equal parts.<br>
• Count the shaded parts and total parts — the figure is already exactly \( \frac{1}{2} \) shaded.<br>
• No additional parts need to be shaded.<br>
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Final Answer: A: 0