Look at the sequence of symbols carefully to find the pattern. Select correct…

Concept

Each segment of the sequence is built from figures with a specific number of sides (or line-segments), and the side-counts across the whole sequence trace a single symmetric mountain: they rise step by step to a peak, then fall step by step back down.

Application

1. The first segment shows a 1-sided figure, then a 2-sided figure, then a 3-sided figure — the count rises from 1 to 3.

2. The second segment shows a 4-sided figure, then a 5-sided figure, then a 4-sided figure again — the count keeps rising to a peak of 5, then falls back to 4.

3. The third segment opens with a 3-sided figure, continuing the fall from the previous segment's 4. To keep the same falling step size, the next two figures must have 2 sides and then 1 side.

Cross-check

Written out in full, the side-counts across all three segments are 1, 2, 3, 4, 5, 4, 3, 2, 1 — a perfectly symmetric rise-then-fall. Only the option whose two figures have 2 sides and 1 side (in that order) continues this pattern; the other options either repeat side-counts already used earlier, reverse the falling order, or break the one-step-at-a-time change.

Why the other options don't fit

• The option built from a 4-sided and a 5-sided figure repeats the second segment's own shapes instead of carrying the fall forward.

• The option that jumps from a 2-sided figure to a 4-sided figure breaks the steady one-step fall.

• The option that opens with a 1-sided figure before a 3-sided figure reverses the required falling order.

Answer

The figure pair with 2 sides then 1 side completes the sequence.