Explanation:

- Let's split the series into parts:

- ACEGIKM

- OBDFHJLN

- ACEGIKM

- BDFHJLA

- Notice these are alternating skipping-letter sequences:

- First: A, C, E, G, I, K, M (every 2nd letter, starts at A)

- Second: O, B, D, F, H, J, L, N (starts at O, then continues skipping letters in the alphabet)

- Then, repeats the first set: A, C, E, G, I, K, M

- Then: B, D, F, H, J, L, A (skipping by twos from B, but after L restarts at A)

- The next letter after A in the last part (BDFHJLA) is:

- Sequence: B, D, F, H, J, L, A, __?__

- After A, following the skip by 2 pattern, it should be C.

- Option 2: C

- Therefore, the correct answer is option 2.