English Spelling — Identify the misspelled word (choose the incorrect spelling; select 'All correct' if none). Words: A) Leisure B) Nuisance C) Opineon D) Mystery E) All correct

Introduction / Context:
Spelling items often target tricky vowel patterns. “Opinion” is a high-frequency word, yet many learners insert an extra vowel or swap positions when unstressed vowels reduce in speech. Your job is to spot the exact orthographic form against near-phonetic impostors.

Given Data / Assumptions:

• Leisure — correct (pronounced /ˈleʒə/ or /ˈliːʒər/ depending on dialect).
• Nuisance — correct.
• Opineon — suspicious; likely intended to be “Opinion.”
• Mystery — correct.

Concept / Approach:
Map each option to a known lemma. The noun from “opine” is “opinion,” spelled o-p-i-n-i-o-n. The sequence “-eon” in “Opineon” is wrong; English uses “-ion” for this family (nation, vision, opinion), with exceptions governed by etymology.

Step-by-Step Solution:

Verification / Alternative check:
Substitute into a sentence: “In my opinion …” The only accepted spelling is “opinion.”

Why Other Options Are Wrong:

• A, B, D are standard spellings in major dictionaries.

Common Pitfalls:
Adding letters to represent weak vowel sounds (schwa). Trust established patterns: many nouns end with “-ion,” not “-eon,” unless etymology demands (e.g., “neon,” “freon” are different roots).

Final Answer:
Opineon