Explanation:

- To check divisibility by 7, perform the following steps: Double the last digit, subtract it from the remaining number, and if the result is divisible by 7, then the original number is also divisible.

- Option 1: 24973

- Double 3 = 6; 2497 - 6 = 2491.

- 2491 is not divisible by 7.

- Option 2: 24983

- Double 3 = 6; 2498 - 6 = 2492.

- 2492 is divisible by 7.

- Option 3: 24963

- Double 3 = 6; 2496 - 6 = 2490.

- 2490 is not divisible by 7.

- Option 4: 24993

- Double 3 = 6; 2499 - 6 = 2493.

- 2493 is not divisible by 7.

The correct answer is Option 2: 24983.