Classification (spelling – colour terms): Three entries are correctly spelled shades of red; one entry is misspelled. Identify the misspelled one.

Introduction / Context:
When several items seem to belong to exactly the same category, exam setters often inject an orthographic (spelling) trap to preserve the single-answer structure. Crimson, scarlet, and cardinal are correctly spelled English colour names (all reds). “Vermilion” is also a shade of red, but the correct spelling requires an “r” after the initial “Ve.” The option given as “Vemilion” is therefore the misspelled outlier.

Given Data / Assumptions:

• Crimson — correct spelling; deep red.
• Scarlet — correct spelling; bright red with a hint of orange.
• Cardinal — correct spelling; deep red.
• Vermilion — correct spelling (with “r”); the listed “Vemilion” is incorrect.

Concept / Approach:
Because all four words are names of red hues, a pure “category” test would yield no odd one. Under the Recovery-First policy, we minimally repair the stem by interpreting it as a spelling/word-form classification: three are correctly spelled, and one contains a spelling error. This preserves the single-answer requirement without altering the underlying topic (colour vocabulary).

Step-by-Step Solution:

Verification / Alternative check:
Pronunciation cue: “ver-MI-lee-ən” signals an audible “r” after the initial syllable; the written form must include it.

Why Other Options Are Wrong:

Common Pitfalls:
Overthinking hue differences (deep vs bright) and missing the orthography trap. The question intends exactly one objective outlier.

Final Answer:
Vemilion