Final answer:
The BIG10 pays each school annually based on a revenue-sharing agreement. The revenue amounts vary each year, but based on the given information, the closest option to the last revenue amount provided is $40 million.
Step-by-step explanation:
The BIG10 pays each school annually based on a revenue-sharing agreement. The exact amount varies from year to year. Based on the information provided, the revenue in the given years is $15 million, $17.4 million, $18.9 million, and $51.3 million. Therefore, the answer would be d) $40 million, as it is the closest option to the last revenue amount provided.