Answer:
Job enrichment
Explanation:
A manager can be defined as an individual who is saddled with the responsibility of providing guidance, support, supervision, administrative control, as well as acting as a role model or example to the employees working in an organization by being morally upright.
Generally, managers are typically involved in taking up leadership roles and as such are expected to be build a strong relationship between their employees or subordinates by creating a fair ground for effective communication and sharing of resources and information. Also, they are required to engage their staff members (entire workforce) in the most efficient and effective manner.
In this scenario, the strategy Isabelle is using to motivate her subordinates is job enrichment by giving or granting them greater satisfaction in their jobs.