To identify a line of reflection that flips the hexagon onto itself, we first need to observe the symmetry of the figure.
- If the figure has horizontal symmetry, the line of reflection would be \( y = 0 \).
- If the figure has vertical symmetry, the line of reflection would be \( x = n \) (where \( n \) is the x-coordinate of the line).
- If the figure has symmetry specific to its vertices, the reflection line could be \( y = -r \) or \( x = -m \).
Without the specific coordinates and shapes of the hexagon provided in the image, it’s challenging to give a definitive answer. However, if the hexagon is symmetric about the x-axis, the correct line of reflection would be \( y = 0 \).
Based on common scenarios in geometry, the line of reflection for a polygon that is symmetric about the x-axis is usually \( y = 0 \).
Final Answer: y = 0