What does "prorated amount" refer to?

The term "prorated amount" typically refers to a calculation that determines a portion of a total amount based on a specific time frame or usage. This means if a service is billed monthly and a person signs up midway through the month, they would only pay for the days they are actually using the service rather than the full month's cost. Therefore, a prorated amount can often be a discounted rate that reflects the time the service was received rather than the standard rate for a full month.

In the context of the choices provided, a discounted rate for immediate sign-up aligns with this understanding, as it implies that the initial fee will be adjusted based on the timing of the enrollment, allowing clients to pay only for the service they will actually use during that period.