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

Concept: In a pattern-completion figure series, each group shares one shape family, and every group follows two independent placement rules together — a size rule (the outer two positions hold the smaller version of the shape, the middle position holds the larger version) and a shading rule (exactly one position per group is filled solid, and the filled position rotates from group to group in a fixed order: right, then left, then right again).

Application:

1. The circle group reads small-outline, large-outline, small-filled — the middle position holds the largest circle, and the filled (shaded) position is the rightmost (3rd) one.

2. The triangle group reads filled, large-outline, small-outline — the middle position again holds the largest triangle, but the filled position has rotated to the leftmost (1st) one.

3. By the same right-left-right rotation, the shaded position for the square group must move back to the rightmost (3rd) one, and the middle position must again hold the largest square.

4. The square group's own first member is already shown as a small, unshaded square, which matches this rule (only the third position should be shaded this time).

5. So the two missing members must be, in order: an unshaded large square (the middle, biggest member), followed by a shaded (filled) small square (the rightmost member).

Cross-check:

• A pair of unshaded squares (both outline) fails the shading rule, since the rotation requires the third position to be filled this time.

• A pair built from triangles fails the shape-family rule, since the group must stay squares throughout.

• A pair with the shading placed on the larger square instead of the smaller, rightmost one fails the shading-position rule.

• Only the pair matching a large unshaded square followed by a small filled square satisfies both the size hierarchy and the right-shaded rotation together.