Which of the following job roles is primarily tasked with communicating the project timeline changes?

Which of the following are characteristics of a project? (Choose two.)

During the execution phase of a project, a project task has run longer than anticipated.

Which of the following is the new critical path of the project if Task 2 requires an additional two days to complete?

A senior developer abruptly resigned without notice. Because of the senior developer's expertise, the active task workload was substantial.
This would likely impact the project's: (Select two.)

The project manager of a global project constantly receives complaints from individuals at another location that some team members are not available after lunch on Fridays. This is acceptable to the project manager.
Which of the following factors is the MOST likely cause for this scenario?