We need to decode the pattern between "PUPIL" and "RWRKN":
P → R: Shift by +2
U → W: Shift by +2
P → R: Shift by +2
I → K: Shift by +2
L → N: Shift by +2
Applying the same shift of +2 to "ROAST":
R → T: Shift by +2
O → Q: Shift by +2
A → C: Shift by +2
S → U: Shift by +2
T → V: Shift by +2
Thus, "ROAST" is written as "TQCUV".
Conclusion: The correct answer is (1) TQCUV.