In a fixed transformation: CALANDER → CLANAEDR. Using the same rule, how is CIRCULAR written?

Introduction / Context:
This puzzle uses a deterministic positional swap pattern. From the example, we can infer which indices are swapped and apply the same to the new word.

Given Data / Assumptions:

• Example: CALANDER → CLANAEDR.
• Observation: Positions (2,3), (4,5), and (6,7) are swapped; positions 1 and 8 remain fixed.
• Target word: CIRCULAR (8 letters).

Concept / Approach:
Maintain indices 1 and 8; swap adjacent pairs (2,3), (4,5), (6,7). This mirrors the example mapping exactly.

Step-by-Step Solution:
Indices and letters for CIRCULAR: 1 C, 2 I, 3 R, 4 C, 5 U, 6 L, 7 A, 8 R.Keep 1 and 8 unchanged: C _ _ _ _ _ _ R.Swap (2,3): I R → R I.Swap (4,5): C U → U C.Swap (6,7): L A → A L.Result: C R I U C A L R → CRIUCALR.

Verification / Alternative check:
Reapply the rule to CALANDER to see it reproduces CLANAEDR, confirming correctness.

Why Other Options Are Wrong:

• ICCRLURA / CRIUCLRA / CRIARLCU: These do not preserve the exact pair swap pattern and misplace one or more adjacent pairs.

Common Pitfalls:
Forgetting which indices are fixed or swapping the wrong adjacent pairs.

Final Answer:
CRIUCALR