A nail shape completely straight across the free edge with no rounding.

• A. Round
• B. Squoval
• C. Square
• D. Stilleto

Answer: (C)

Identifying nail shapes by the free edge profile is what this item tests. A free edge that is completely straight across with no rounding corresponds to a square shape. The defining feature is a straight edge with sharp, 90-degree corners along the sides. If there were any curved edge along the tip, it would be round; if the corners were softened, it would be squoval; if the tip narrowed to a point, it would be stiletto. So the straight, flat free edge with no rounding best describes square.