Select the combination of letters that when sequentially placed in the blanks of the given series will make it logically complete.

PR_Y _ _RA­_ ZP_ A_ Z

Correct option is D

By checking option a , option b and option c  , we found that these options are not giving perfest repitation but by checking option d we get repitition of  'PRAY - Z'

P R A Y Z/ P R A Y Z/ P R A Y Z