The correct answer is option 'A'. The King ordered the construction of an arch.

Explanation:

Importance of context: It is important to consider the context in which the question is asked. The question mentions that the King ordered something to be constructed, so we need to find the answer that best fits this context.

Identifying the correct option:

Option 'A': An arch
Option 'B': A tomb
Option 'C': Footsteps
Option 'D': A building

Given the limited options provided, we can eliminate option 'B' as a tomb is more likely to be associated with burial rather than construction. Option 'C' does not seem to fit the context of construction either. Option 'D' is too vague, as a building could refer to any type of structure. Therefore, the best option is 'A', an arch.

Explanation of the answer:

An arch is a curved structure that is used to support weight and span an open space. It is commonly used in architecture and engineering to create openings in walls or to support the weight of a structure, such as a bridge or a building.

Architectural significance:

Arches have been used in architecture for centuries and are known for their strength and durability. They distribute loads evenly, allowing for larger openings and more open spaces.

In historical contexts, arches were often used as entrances or gateways to significant buildings or areas. They could be a symbol of power, as they provided a grand entrance and a sense of awe.

Construction process:

The construction of an arch involves carefully designing the shape and dimensions of the curve to ensure its stability and functionality. It requires skilled masons or engineers who understand the principles of arch construction.

The construction process can vary depending on the materials used, such as stone, brick, or concrete. Generally, the construction starts with a temporary support structure called a centering, which holds the stones or bricks in place until the arch is complete. The stones or bricks are then laid in a specific pattern, gradually forming the arch shape.

Conclusion:
In conclusion, the King ordered the construction of an arch. This type of structure is commonly used in architecture and engineering to create openings or support the weight of a structure. It is known for its strength, durability, and architectural significance. The construction process involves careful design and skilled labor.