Find the odd figure among the four given figures.

The correct answer is Option (3) → 

Compare the small shape with the big one. In three figures the inner shape is the same as the outer shape. In Option (3) a hexagon is drawn inside an octagon, so it is the odd one out.

Option (1) — Incorrect. A heptagon (seven-sided figure) with a small heptagon (seven-sided figure) inside: the inner shape is the same as the outer one.

Option (2) — Incorrect. A hexagon with a small hexagon inside: the inner shape is the same as the outer one.

Option (4) — Incorrect. A triangle with a small triangle inside: the inner shape is the same as the outer one.