In the given string, game = "Olympic2024", we are trying to find the index of the character `"C"`.
However, Python’s string index method is case-sensitive.
The string `"Olympic2024"` contains a lowercase `"c"` at position 6, but not an uppercase `"C"`.
The index() method searches for the exact match and raises a ValueError if the substring is not found.
Unlike the find() method, which returns -1 when not found, index() throws an error.
Since `"C"` (uppercase) does not exist in the string, Python will raise a ValueError.
Therefore, the correct answer is option (D).