Spelling – Identify the one misspelled word among options A–D, or choose “All correct” if every option is correctly spelled. A) Seperation B) Desertion C) Rejoice D) Serenity

Introduction / Context:
This verbal ability question tests precise English spelling, especially words with confusing vowel sequences. Your task is to find the single misspelling among four near-lookalike options, or confirm that all are correct.

Given Data / Assumptions:

• Aim: locate the one incorrect spelling, if any.
• Candidate words: Separation/Desertion/Rejoice/Serenity (as presented).
• Dictionary standard: contemporary British/International English (American variants noted where relevant).

Concept / Approach:
Focus on common error patterns: (1) misplaced vowels in -ar-/-er- clusters; (2) suffix forms like -tion, -sion; (3) roots where pronunciation masks the correct vowel. Cross-check with known roots: “separate” → “separation”, “desert” → “desertion”, “joy” → “rejoice”, “serene” → “serenity”.

Step-by-Step Solution:

Verification / Alternative check:
Mnemonic: sEParate has an A (think “a rat” inside “sepARATe”). Therefore, separation must keep the a. Quick dictionary or spell-checker corroborates “separation”.

Why Other Options Are Wrong:

• Desertion: Standard derivative of desert; correct.
• Rejoice: Standard verb meaning “feel joy”; correct.
• Serenity: Correct noun from serene.

Common Pitfalls:
Pronunciation tempts writers toward seperation. Another trap is confusing “desert” with “dessert”: here, “desertion” (one s) is right.

Final Answer:
Seperation