Jon is an internal consultant who has been tasked with guiding his company through an organization$-$wide change. Jon surveys employees to gather insights regarding their attitudes toward the change. He designs training workshops to help employees learn new behaviors and recommends to upper management that the company$$s reward system be modified to motivate and support the changes. Jon also monitors how well the changes are progressing. Jon is engaging in:

A$.$ proactive change.

B$.$ the eight$-$step model of change.

C$.$ the unfreezing stage.

D $.$ organizational development.