You just completed the first phase of a multi-phase project. You have calculated earned value measurements and found that the current CPI is 0.79 and the current SPI is 0.98. Your next phase plan should focus first on which element of the project:
A: Quality
B: Resources
C: Schedule
D: Cost
Correct answer is D.
A Schedule Performance Index (SPI) of less than one indicates that less work has completed than planned, and a Cost Performance Index (CPI) of less than one indicates a cost overrun for the work completed. In this scenario, the cost overrun is more severe than the schedule delay. Therefore, you should focus on reducing the cost of the project. PMBOK Guide page 263.