Which of the following tools/ technique of the quality planning process can be used to identify the project variables that will have the greatest impact on overall project outcomes and results?

Midway through project execution, several stakeholders raise concerns about team performance and delivery.
The project manager believes the project is progressing per the approved scope, budget, and schedule.
What should the project manager do next?

According to the project contract the delivery date is approaching However one important material is still not on site The construction work will have to stop and wait for this special material, delaying the project.
What should the project manager do?

A project manager develops a business case during project initiation. What areas should the project manager consider when developing the business case?

Which is not a technique for Sequence Activities?