A team has a lot of difficulty in performing system integration testing.

Performingsystem integration testingmore frequently helps identify integration issues early, reducing the cost and time associated with fixing problems discovered later in the development cycle. Continuous integration testing is a core practice in Agile and Disciplined Agile that ensures changes are regularly validated, promoting a smoother integration process. Conducting integration tests more often allows the team to catch defects early and maintain a stable and reliable build.

Options B (adding team members) and C (testing only at the end) are not best practices as they do not address the root cause of the problem. Option D (finding a way to do less integration testing) contradicts Agile principles, which emphasize frequent testing.

References:

PMI’s Disciplined Agile Senior Scrum Master (DASSM) curriculum materials.

"Choose Your WoW! A Disciplined Agile Delivery Handbook for Optimizing Your Way of Working (WoW)", PMI.