Correct option is B
Information Given:
Series:
4 7 5 1 3 2 9 1 6 9 7 4 6 2 8 1 3 8 8 8 4 7 3 7 7 9 1
Required pattern: Odd – Odd – Even
Logic:
Count odd numbers that are immediately preceded by an odd number and followed by an even number.
Explanation:

Total such odd numbers = 4
Final Answer:
4
Final Correct Option:
B