Final answer:
Mitsui is most closely involved in Customer Engagement in the CRM process. They use CRM software to communicate with customers via email and text notifications, sharing information about sales, recalls, and special events.
Step-by-step explanation:
Mitsui is most closely involved in Customer Engagement in the CRM process. Customer engagement refers to the interactions and communications between a business and its customers. In this case, Mitsui is using CRM software to communicate with customers via email and text notifications, sharing information about sales, recalls, and special events. This helps Mitsui to engage and build relationships with their customers.