Agile teams often use _________ charts to visualize progress and identify potential bottlenecks.

Agile teams commonly use Burnup charts to visualize progress and identify potential bottlenecks. Burnup charts display the total work (usually represented in story points) planned for a sprint or release over time, alongside the actual work completed. This visual representation helps teams track their progress, assess whether they are on track to meet their goals, and identify any scope changes or bottlenecks that may arise during development. Pie charts are typically used to represent data in parts of a whole, such as percentages of completion, but they are not commonly used for tracking Agile project progress. Scatter charts are used to show relationships between different variables but are not specific to Agile progress tracking. Gantt charts, while useful for project planning and scheduling, may not be as effective for Agile teams in visualizing progress and identifying bottlenecks compared to Burnup charts. Therefore, Burnup charts are the preferred choice for Agile progress visualization.