Answer:
It is an extrinsic reward example.
Explanation:
Extrinsic reward is the kind of reward which is visible reward and tangible in nature, it is given to an employee or an individual for accomplishing something. This mostly have monetary value like bonus, public recognition or award.
In this scenario, the supervisor is so impressed by the work of Alyssa that she named her as the employee of the month which is an extrinsic award.