New PMP Question & Answers with explanation

You are using an agile project management methodology to deliver business value. During each iteration, you and the team members are breaking down tasks into tangible components that have enough features and functionality to allow the customer to examine value and provide feedback to the team. Which of the following are true regarding this question when using a Scrum methodology?
Select two
Your project requires contract resources with specific subject matter expertise to deliver business value. All of the following are true except which one?
Select one
How will you know that business value is being achieved?
Select one
You are using an agile approach to deliver business value incrementally. What other elements of business value should you be focused on?
Select two
The VP of Human Resources has requested a new timekeeping project for their machine shop workers. The business value for this project is improving payroll accuracy. The workers are threatening a strike because of the antiquated system in place now. The current system has ancient time clocks that rarely work, causing the workers to revert to paper timecards. This creates multiple errors in overtime pay and shift differential pay. Which of the following is true regarding this scenario?
Select three