J
i
m
The series appears to be following a pattern where the letters are increasing in alphabetical order, skipping some letters. The pattern is A (skipping B) D (skipping E, F, G, H, I, J, K, L, M, N) O (skipping P) Q. Therefore, the next letter in the series should be R.
The letter "A" or "a" precedes the letter "B" or "b".
The next letter should be "S".
bb
Z
J
b
The answer is C.
d
The answer is C.
B
bb
bb
b