Select the correct mirror image of the given combination when the mirror is placed at MN as shown below.

To find the correct mirror image of the given combination when the mirror is placed vertically on the right side at line MN, we follow the key rules of lateral inversion:

1. Reversal of Order: The character closest to the mirror line MN (on the far right) will appear first (on the far left) in the mirror image. The original sequence from left to right is Z a r 2 7 h F. Therefore, the mirror image sequence from left to right must start with the lateral inversion of F and end with the lateral inversion of Z.

2. Individual Character Inversions:
• F mirrors horizontally to facing left (⯑).
• h mirrors horizontally to facing right (stem on right side).
• 7 mirrors horizontally.
• 2 mirrors horizontally.
• r mirrors horizontally.
• a mirrors horizontally.
• Z mirrors horizontally to face the opposite direction.

Let's check the options step-by-step:

• Looking at the first character of the mirror image (which must be the mirror reflection of F):
- Option 3 correctly shows the horizontally flipped 'F' (which looks like a laterally inverted F).
- Option 1 starts with a flipped 'F', but fails on other character flips.
- Option 2 has an un-inverted 'F'.
- Option 4 swaps the positions of 7 and 2.

Thus, the correct mirror image corresponds to the option image below: