A project manager schedules virtual daily standup meetings for a project, but half of the team members regularly join late or miss the meeting all together. What should the project manager do?

A project manager is managing a project with team members who are working all over the globe. The project manager notices that each team member's deliverables do not meet the requirements.
What should the project manager do first?

A building management system (BMS) project is in its commissioning phase and handover to the operations team will commence soon. However, the project manager noted that both the project and operation teams are not able to properly operate the BMS. As a result, there is an increased risk of the project schedule being delayed.
What should the project manager have done to avoid this situation?

A project has been reporting a declining schedule performance index (SPI) for the past four reviews. No corrective action is under development, and the project team does not seem concerned.
What should the project manager do first to address the SPI trend?

A project manager is assigned to a new project. The project is for a new product that the company wants to launch as soon as possible to test market readiness. The project is part of a large business transformation, and the objective is to open delivery channels for the new product.
Which delivery approach should the project manager recommend?