Correct Answer: PRMPTTM

Solution : Given: _TM_PT_R_ _MRP_ _ R

To fill the series we have to divide the series – _TM_/PT_R/ _ _MR/ P_ _R

Let's check each option –
First option: MPTRMTT; M TM P / PT T R/ R M MR/ P T T R (No pattern is repeated.)
Second option: PRMPTTM; P TM R / PT M R / PT MR / P TM R (PTMR is repeated.)
Third option: PMTRRMT; P TM M / PT T R / R R MR / P M T R (No pattern is repeated.)
Fourth option: MTPRTMR; M TM T / PT P R / R T MR / P M R R (No pattern is repeated.)

So, the series is→PTMRPTMRPTMRPTMR. Hence, the second option is correct.