What is required to create a Bounded Plane?

Creating a Bounded Plane involves defining a flat area within specific limits, which is accomplished by having a closed set of 2D curves. These curves need to be arranged in such a way that they fully enclose a space, allowing for the establishment of a boundary. This closed geometry ensures that the area is well-defined, making it possible to fill this enclosed space with a plane.

The other options do not fulfill the requirements for creating a Bounded Plane. An open set of curves does not close off an area, thus failing to create a definable region. A set of 3D points lacks the necessary relationship between them to establish a plane without additional information or constraints. A defined surface boundary may imply some boundary exists, but it does not explicitly state that a closed set of 2D curves is involved in specifying that boundary, which is essential for a Bounded Plane.