When letters from A to Z are numbered from 1 to 26 respectively.
The sequence of position of first letter Z(26), V(22), R(18), N(14),..decrease by 4, so next letter at position 10=J
The second letter position C(3), E(5), I(9), O(15),... Increasing difference of 2, 4, 6,.., so next difference will be 8 and position 23=W
Two-digit number after letters is obtained by the sum of positions of first two letters i.e. ZC(26+3=29), VE(22+5=27), RJ(18+9=27), NO(14+15=29), so next number will be JW(10+23=33)
Hence correct cluster is JW33
Option 8)