Final answer:
Janis' scholarship payments can be described as an annuity.
Step-by-step explanation:
The term that best describes Janis' scholarship payments is Annuity.
An annuity is a series of equal payments made at regular intervals over a specified period of time. In this case, Janis will receive $500 each month for the next 48 months, making it an annuity.
Annuities are commonly used to describe payments such as monthly salaries, pensions, or scholarship grants.