Which of the following refers to the impact of changing project requirements on a design?

The correct answer, which identifies the impact of changing project requirements on a design, is scope expansion. Scope expansion typically refers to the phenomenon where additional requirements or modifications are introduced after the initial project scope has been defined. This often leads to an increase in project deliverables and, potentially, alterations in the original design to accommodate new needs or features. As requirements evolve, they can result in more complexities in the project, requiring architects and project managers to adjust their plans accordingly.

In contrast, terms like scope alignment and design specification focus more on the initial framework and details of project requirements rather than their evolution. Design revision is considered a process of modifying existing designs in response to feedback or issues but does not capture the broader context of expanding scope due to changing requirements. Thus, scope expansion is the term that best encapsulates the influence of new or altered project requirements on design development.