In an agile approach, which phase involves defining a hypothesis to find a problem in a program?

In an agile approach, the phase that involves defining a hypothesis to find a problem in a program is the testing phase. This phase is crucial because it focuses on identifying whether the software meets the necessary requirements and works as intended. During testing, a hypothesis is often formulated about what might be going wrong or how a feature might not be functioning optimally. The team conducts tests to validate these hypotheses, allowing them to uncover issues and refine the product further.

Additionally, the testing phase often incorporates practices such as automated testing and continuous integration, which enable rapid feedback on the software's performance and functionality. This iterative process helps in making necessary adjustments before the software reaches the end-users, ensuring higher quality and more effective solutions are delivered.

In contrast, the planning phase is primarily concerned with setting goals, scope, and objectives for the project, while the design phase focuses on the architecture and individual components of the software. The implementation phase involves the actual writing of code to create the software, rather than investigating its issues.