A development team has too much work in progress.

Kanban is specifically designed to improve flow by visualizing work, limiting work in progress, and helping teams identify bottlenecks. In this scenario, the problem is not lack of effort but poor flow discipline. Too much simultaneous work causes delay, context switching, and reduced throughput.

Chaos engineering is for resilience testing. Shift-left testing improves early quality control. Service level management focuses on agreed service targets. None of those addresses the core issue as directly as Kanban.

Therefore A is the best answer.

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