Choose the missing terms out of the given alternatives. DHL, PTX, BFJ, ?

CGK
KOS
NRV
RVZ

The correct answer is C. NRV.

The pattern is to take the first letter of each word, then the third letter, then the fifth letter, and so on.

DHL = D, H, L
PTX = P, T, X
BFJ = B, F, J
NRV = N, R, V

The next letter in the pattern is N, so the missing term is NRV.