The correct answer is Issue Resolution Time Report.

The Issue Resolution Time Report is designed to show how long issues remain open before they are resolved and it typically presents that information as a bar chart with time buckets so it matches Maya's need for a vertical bar chart of ticket open durations.

Average Open Age Report shows average age metrics for open issues and it does not provide a distribution histogram of how long tickets stay open before closure.

Pie Chart Report displays proportions of issues by category or field and it will not show time durations as a vertical bar chart.

Single Field Grouping Report groups issues by a single field to show counts per value and it is not intended to display time to resolution distributions.

Time Tracking Report focuses on estimates and logged work time for tasks and it does not measure how long tickets remain open until they are closed.

Issue Date Timeline Report presents issues along a date based timeline and it does not produce a bar chart of resolution times grouped into duration buckets.

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