A project team's manager is responsible for delivering a specific initiative for the organization.

Step 1: Identify Total Story Points in the Backlog

From the backlog table:

Total story points = 6 + 4 + 8 + 4 + 21 + 7 + 5 + 9 + 3 + 5 = 72

Step 2: Determine the Team's Velocity

The risk register mentions a burn reduction of 1 story point per sprint from sprint 4 to sprint 6 due to a holiday schedule. However, assuming a normal velocity of 5 story points per sprint, we can estimate sprint completion.

Normal sprint velocity: 5 story points per sprint

Reduced velocity for sprints 4-6: 4 story points per sprint

Step 3: Calculate Total Sprints Needed

First 3 sprints: 5 points per sprint → 5 × 3 = 15 story points completed

Sprints 4-6: 4 points per sprint → 4 × 3 = 12 story points completed

Remaining story points after sprint 6: 72 - (15 + 12) = 45 story points

Remaining sprints needed at normal velocity (5 story points per sprint): 45 ÷ 5 = 9 sprints

Total Sprints Required

Sprints 1-6: Already planned.

Additional 9 sprints needed.

Total sprints to complete the backlog: 6 + 9 = 15 sprints.