Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
CDG_ IJ_Z O_SZ _VYZ _BEZ

Correct option is A

Given: CDG_ IJ_Z O_SZ _VYZ _BEZ
From the given options-
(a) ZMPUA
CDG Z/IJ MZ/O PSZ/ UVYZ/ ABEZ (sequence followed) (1st + 1, 2nd + 3 and the last letter Z.)
(b) OJGFU
CDG O/J JZO GSZ FVYZ UBEZ (sequence not followed)
(c) FUGUI
CDG F/IJ UZO GSZ UVYZ IBEZ (sequence not followed)
(d) FJONI
CDG FI/J JZO OSZ NVYZ IBEZ (sequence not followed)
Thus, the correct answer is (a) ZMPUA.