Explanation:

- In the given code, each letter in the word is replaced by its position in the alphabetical order (A=1, B=2, etc.).

- For the word BREATHER, the code is set as:

- B (2), R (18), E (5), A (1), T (20), H (8), E (5), R (18).

- This seems to be rearranged or summed up to form 29512859.

- Similarly, apply the logic to AVIATION:

- A (1), V (22), I (9), A (1), T (20), I (9), O (15), N (14).

- Rearrange or use a pattern seen in BREATHER to form 14912965.

- Option: 1, 14912965 appears to follow the same pattern by selectively using positions.

Option: 1 - 14912965 is the correct answer.

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