Step 1: Concept Identification:
This is a spatial reasoning challenge involving figure formation. The objective is to mentally rotate and assemble the provided pieces to construct a perfect square.
Step 2: Analysis of Pieces:
Examine the shapes of each piece and their potential interconnections to form the corners and sides of a square.
Piece (A): Possesses a 90-degree angle suitable for the top-left corner of the square. Its lower edge is intricately stepped.
Piece (C): Features a 90-degree angle appropriate for the bottom-right corner. Its upper edge exhibits a stepped pattern that complements the lower edge of piece (A).
Assembly of (A) and (C): Positioning (A) in the top-left and (C) in the bottom-right allows their stepped edges to interlock. This combined configuration creates a substantial shape with a central 'V'-shaped void.
Piece (B): Is arrowhead-shaped. The upper portion of the arrowhead precisely matches the 'V'-shaped void formed by assembling (A) and (C).
Integration of (A), (B), and (C): Inserting piece (B) into the gap between (A) and (C) results in aligned edges that complete a solid square.
Piece (D): Is a simple shape with a diagonal cut. Its straight edges and uncomplex form do not align with the detailed, interlocking edges of pieces A, B, and C. It is not part of the square formation.
Step 3: Conclusion:
Pieces (A), (B), and (C) are the components that assemble to form a complete square.