A mirror is placed on line XY. Choose the correct mirror image of the given figure.

The correct option is Option 3.

Explanation:
When a mirror is placed vertically on the right side of an object (along line AB), the resulting mirror image undergoes lateral inversion (left-to-right reversal):
1. Reversal of Position Order: The character closest to the mirror on the right ('3') appears first (leftmost) in the mirror image, while the character farthest from the mirror on the left ('V') appears last (rightmost).
2. Lateral Inversion of Characters: Each individual letter and digit is flipped horizontally across its vertical axis.

Let's analyze the given string VeDeN123 character-by-character from right to left:

• 3 (closest to the mirror): Appears first on the left, horizontally flipped.
• 2: Appears next, horizontally flipped.
• 1: The top stroke/flag pointing to the left in the original figure points to the right in the mirror image.
• N: The diagonal line running from top-left to bottom-right flips to run from top-right to bottom-left.
• e: The loop flips horizontally to face left.
• D: The straight vertical bar moves to the right side, and the rounded curve moves to the left side.
• e: Flips horizontally to face left.
• V (farthest from the mirror): Since 'V' is symmetrical about its vertical axis, its mirror image remains unchanged.

Now let's examine the options:
• Option 1: Incorrect because the letter 'D' is not laterally inverted.
• Option 2: Incorrect because the second letter 'e' (seventh character from the left) is not laterally inverted.
• Option 3: Correct because all characters are in the proper reversed order and every single character is correctly laterally inverted.
• Option 4: Incorrect because the letter 'N' is not laterally inverted.

Therefore, Option 3 is the correct mirror image: