BEAK : ORNX :: FILM : ? — Decode the letter-mapping rule in the first pair and apply it to the second word.

Introduction / Context:
Some analogy questions use consistent letter transformations instead of semantic relations. The pair “BEAK : ORNX” signals a systematic substitution cipher rather than a meaning-based relation. Your task is to detect the rule and apply it to “FILM.”

Given Data / Assumptions:

• Original: BEAK.
• Mapped: ORNX.
• Target word: FILM.
• We suspect a constant alphabetic shift per letter.

Concept / Approach:
Check whether each letter has been advanced by a fixed amount. B→O is a shift of +13 (B=2 to O=15). E→R (+13), A→N (+13), K→X (+13). This uniform +13 shift is the well-known ROT13 cipher (a Caesar shift by 13). Apply ROT13 to each letter of FILM to get the answer.

Step-by-Step Solution:
Compute ROT13 for F→S, I→V, L→Y, M→Z.Thus, FILM → SVYZ.Select the option that equals SVYZ.

Verification / Alternative check:
ROT13 is involutive: applying it twice returns the original word. Checking ORNX back → BEAK confirms the rule. Applying once to FILM yields SVYZ, matching option C.

Why Other Options Are Wrong:

• RUXY/URON/MLIF/SVXZ: Do not result from a strict +13 shift on all letters of FILM; some letters break the uniform mapping.

Common Pitfalls:
Inconsistent shifting (e.g., mixing +12 or +14), or letter wrapping errors at Z→A. ROT13 demands a precise +13 rotation with wrap-around.

Final Answer:
SVYZ