Final answer:
The software design approach most directly associated with Test Driven Development (TDD) is Agile.
Step-by-step explanation:
The software design approach most directly associated with Test Driven Development (TDD) is Agile.
TDD is a software development approach where tests are written before the code is implemented. It follows an iterative and incremental development process, where small pieces of functionality are added and tested incrementally.
Agile is a software development methodology that emphasizes iterative and incremental development, collaboration, and flexibility. TDD aligns well with the Agile principles, as both focus on frequent testing, continuous improvement, and responding to changes.