Explanation:

- The relationship between the numbers 97 and 2 can be derived as follows: 9 + 7 = 16, and 1 + 6 = 7, where the next step involves adding 5 to get the result, 2. This can resemble subtraction 5.

- Similarly, for the numbers 63 and the unknown, we start by adding 6 + 3 = 9. To resemble the previous pattern, we add 5 to 9, resulting in 4. This doesn't seem to match directly but involves a reduction by 5 for other numbers.

- For the numbers 74 and 3: 7 + 4 = 11, and then 1 + 1 = 2. This can resemble another way where the pattern can involve directly reaching number 3.

Thus, the correct similar operation gives a consistent choice to the situation showing a direct subtraction turning into value of 9.

- Option:2, 7 seems to follow other rules.

- Option:4, 5 and 1, along with Option:3 provides differing results.

Therefore, upon inspection:

9? : Relates to Option:1, it can continue a similar reduced relationship

- .

The pattern is not matching correctly to the expectation outlined, suggesting a misalignment in approach or steps taken.