Answer:
A group picnic
Step-by-step explanation:
In the question above, since the local employees have already met the physiological and safety needs then based on the "hierarchy of needs theory" the next motivation level would be met via the promise of a particular "group picnic" i.e, via "love and belonging needs".
The hierarchy of needs theory was conceptualized by a psychologist named Abraham Maslow. He defined the "love and belonging needs" as the process that involves "range of intimacy" between different people and circumscribe empathy, compassion, caring, being part of a specific community, feelings of being approved or accepted vs. disapproved or rejected by a community, etc.