Select the combination of letters that when filled in the blanks in the same sequencewill make the series logically complete.

_ G I M K _ J N L I _ O M J L _ N K M _​​

Given: _ G I M K _ J N L I _ O M J L _ N K M _​​

Now, we check each options.

Option (a): JIKRQ (Not Follow)

J G / I M / K I / J N / L I / K O / M J / L R / N K / M Q

Option (b): FHMPT (Not Follow)​

F G / I M / K H / J N / L I / M O / M J / L P / N K / M T

Option (c): FIMRT (Not Follow)​

F G / I M / K I / J N / L I / M O / M J / L R / N K / M T

Option (d): JHKPQ (Follow)​

J G / I M / K H / J N / L I / K O / M J / L P / N K / M Q

So, the following pattern is: - 3 and + 4 alternately

Thus, correct option is (d).