The line MN is a mirror standing to the right of 527108. Which option shows the image seen in it?

Answer & explanation
Correct answer: option 1
The correct answer is Option (1) →

A mirror on a vertical line turns left into right: the order of the characters is reversed (the last one, 8, comes first in the image) and each character is reversed; top and bottom do not change. 0 and 8 look the same after this flip, so they keep their shape.

Option (2) — Incorrect. The character 5 is in the right place but is not reversed left to right; everything else is correct.
Option (3) — Incorrect. This is the image in a horizontal mirror (water image): it is turned upside down, not reversed left to right.
Option (4) — Incorrect. This is the group turned through 180° (half a turn): each character is flipped both ways, so it is upside down as well as reversed.