Select the cor rect water image of the given combination of letters. D F N Z S R

To find the correct water image of the letter combination D F N Z S R, we need to understand how water reflection works:
1. Vertical Inversion: The top part of each letter flips to the bottom, and the bottom part flips to the top.
2. Lateral Stability: The left and right orientation of each letter remains unchanged. The sequence of the letters from left to right also remains exactly the same (meaning D stays at the first position on the left, and R stays at the last position on the right).

Let us analyze the vertical reflection of each letter in the sequence D F N Z S R:
• D: The letter is symmetric across the horizontal axis. Therefore, its water image remains identical to the original letter: D.
• F: The vertical line remains on the left. The horizontal bars, which are at the top and middle pointing to the right, flip to the bottom and middle pointing to the right.
• N: The two vertical lines remain on the left and right. The diagonal line, which originally goes from the top-left to the bottom-right, flips vertically to go from the bottom-left to the top-right.
• Z: The horizontal lines at the top and bottom remain in their respective places. The diagonal stroke, which originally goes from the top-right to the bottom-left, flips to go from the top-left to the bottom-right.
• S: The upper curve flips to the bottom and the lower curve flips to the top, resulting in a vertically inverted shape that looks like a reversed 'S'.
• R: The vertical line remains on the left. The curved loop at the top-right flips to the bottom-right, and the diagonal leg at the bottom-right flips to the top-right.

Now, let us evaluate the images corresponding to the options:
• Option 1 (Image 0): Incorrect. The letters (such as F) are horizontally flipped (mirrored), placing the vertical line on the right side.
• Option 2 (Image 1): Incorrect. The sequence order is wrong because the letters N and Z have been swapped into D F Z N S R.
• Option 3 (Image 2): Correct. Every letter is correctly inverted vertically, and the original sequence order is maintained.

Therefore, the correct water image is represented by Option 3.