Correct Answer: AESNAGEP

Solution : Given:
S_G_M_AGE_S_ _EOSAG_ _

To fill the series, we have to divide the series – S_G_M / _AGE_ / S_ _EO / SAG_ _
Let's check each option –
First option: AETNAGEP; S A G E M / T AGE N / S A G EO / SAG EP (No repeated pattern has been found.)
Second option: AFTNAHFP; S A G F M / T AGE N / S A H EO / SAG FP (No repeated pattern has been found.)
Third option: AFTNAHEP; S A G F M / T AGE N / S A H EO / SAG EP (No repeated pattern has been found.)
Fourth option: AESNAGEP; S A G E M / S AGE N / S A G EO / SAG E P (SAGE is repeated in the series and the fifth letter of each part is in sequential alphabetical order.)

So, the series becomes→SAGEMSAGENSAGEOSAGEP. Hence, the fourth option is correct.