Which term refers to a large spiral stairway with curved walls?

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Multiple Choice

Which term refers to a large spiral stairway with curved walls?

Explanation:
A stair that winds around a central point and is enclosed by curved walls is described by the term spiral stairway. When it’s notably sizable, the descriptor “large” is added. So the phrase “large spiral stairway” exactly captures both the curved, spiraling geometry and the larger scale of the feature. The other terms don’t fit: a straight stairway has no curves, a flat curve isn’t a standard term for this type of feature, and installation sequence refers to the order of installing components rather than describing the stair’s shape.

A stair that winds around a central point and is enclosed by curved walls is described by the term spiral stairway. When it’s notably sizable, the descriptor “large” is added. So the phrase “large spiral stairway” exactly captures both the curved, spiraling geometry and the larger scale of the feature. The other terms don’t fit: a straight stairway has no curves, a flat curve isn’t a standard term for this type of feature, and installation sequence refers to the order of installing components rather than describing the stair’s shape.

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