Concept:
Buildings and architectural elements are often associated with basic geometric forms. Identifying the dominant geometric shape helps in correctly matching structures with their forms.
Detailed Matching Explanation:
A. Sanchi Stupa → III. Dome
The Sanchi Stupa is a hemispherical structure.
A hemisphere is a type of dome.
B. Circular Column → I. Cylinder
A circular column has a constant circular cross-section.
This corresponds to the geometric shape of a cylinder.
C. Pyramid → II. Triangular Surfaces
A pyramid is composed of triangular faces meeting at a point.
Hence, its defining surfaces are triangular.
D. Palaces → IV. Cuboids
Palaces generally consist of rectangular blocks and volumes.
These volumes resemble cuboids in geometric form.
Conclusion:
The correct matching is:
\[
\text{A-III, B-I, C-II, D-IV}
\]
Final Answer: \(\boxed{\text{A-III, B-I, C-II, D-IV}}\)