Which option has only geometric shapes?

Square, circle, and triangle

Geometric shapes are based on clear mathematical or conventional rules. They usually have recognizable boundaries, such as the straight sides of a square, the continuous curve of a circle, or the three sides of a triangle. These shapes can be measured, repeated, arranged, and combined easily in artwork and design. Their regular structure makes them different from many natural shapes, which may be uneven or unpredictable.

The correct answer is “Square, circle, and triangle” because all three are commonly recognized geometric shapes. A leaf, cloud, and stone may have outlines, but their forms are generally organic and irregular. Smoke, water, shadow, grass, soil, and air are not a set of regular geometric shapes either. The question asks for an option containing only geometric forms, so option A is the only group that meets that condition clearly.

This is a Class 9 Art Education question. Chapter: Elements of Art. Topic: Shape.