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If 'BOY' is 'CPZ', then 'GIRL' is:
HJSM
HKSN
IKTM
GJSL
HJSM
Observe the constant incremental shift of +1 for every letter in the word to obtain the corresponding encoded letter.
Observe the constant incremental shift of +1 for every letter in the word to obtain the corresponding encoded letter.
Analyze the transformation of BOY to CPZ
Map each letter of BOY to its index and apply the shift: B(2)+1=C(3), O(15)+1=P(16), Y(25)+1=Z(26). The rule is +1 for each letter.
Apply the rule to GIRL
Apply the +1 shift to each letter of GIRL: G(7)+1=H(8), I(9)+1=J(10), R(18)+1=S(19), L(12)+1=M(13). The result is HJSM.
B: HKSN is incorrect as R+1=S and L+1=M, not K and N. C: IKTM is incorrect because it uses wrong shifts for the letters. D: GJSL is incorrect because the G and L are unchanged while others are shifted.
A is correct because applying a consistent shift of +1 to each letter of GIRL (G+1=H, I+1=J, R+1=S, L+1=M) results in the string HJSM.
Always verify the pattern on the first two letters; if the pattern holds, apply it rapidly to the rest of the word to save time.