The new software application being developed will require business process changes and employee training. The manager of the impacted business unit refused to participate in the product visioning or story writing workshop because changing business processes will be too disruptive to their department. What should the project manager do$?$

$1.$Escalate the issue to the sponsor because if the organization is not willing or able to accept the change the project will not provide value.

$2.$Document the lack of participation of the business unit manager as a project risk.

$3.$Schedule an interview with the business unit manager to listen to their objections to the change.

$4.$Talk with the product owner to make sure that the business unit manager is kept informed of when the change is coming.