AZBY : CXDW :: EVFU : ?

GTHS
GHTS
GSTH
TGSH

The answer is A. GTHS.

In the sequence AZBY : CXDW, each letter is three places after the corresponding letter in the alphabet. So, A becomes C, B becomes D, and so on.

In the sequence EVFU : GTHS, each letter is three places after the corresponding letter in the alphabet, starting from the end of the alphabet. So, E becomes G, V becomes T, and so on.

Therefore, the answer is A. GTHS.