Correct Answer: J Q B J A M Q A

Solution : Given:
_ M _ B A J M Q _ A _ M Q B _ J _ _ B_

To fill the series we have to divide the series – _ M _ B A / J M Q _ A / _ M Q B _ / J _ _ B_

Let's check each option –
First option: J Q B J A M Q A; J M Q B A / J M Q B A / J M Q B A / J M Q B A (JMQBA repeated pattern has been found)
Second option: B Q A J M Q A B; B M Q B A / J M Q A A / J M Q B M / J Q A B B (No repeated pattern has been found)
Third option: A M B Q J M J Q; A M M B A / J M Q B A / Q M Q B J / J M J B Q (No repeated pattern has been found)
Fourth option: J A M M Q A B J; J M A B A / J M Q M A / M M Q B Q / J A B B J (No repeated pattern has been found)

So, the series becomes→JMQBAJMQBAJMQBAJMQBA. Hence, the first option is correct.