Answer:
Option C
Explanation:
The given sequence is a combination of two series:
I. Y, T, O and II. B, G, ?
I consists of 2nd, 7th and 12th terms from the end of english alphabet, while II consists of 2nd, 7th and 12th terms from the beginning of the english alphabet. So, the missing letter in II is the 12th letter from the beginning of the english alphabet ie., L.
Hence the answer is (c).