Concept:The correct spelling of the word meaning playful troublemaker is "Mischievous." Many misspell it by adding an extra "i" after the "v."Explanation:The word has three syllables: mis-chie-vous. It does not contain the letters "i-o-u-s" together.Option A "Mischievous" is the only correct spelling. It means someone who causes minor trouble playfully.Option B "Mischievious" is a common error with an extra "i" after "v."Option C "Mischervous" replaces "chie" incorrectly with "cher."Option D "Mishevious" drops the "c" and uses "he" incorrectly.Therefore, the standard English spelling is "Mischievous" with no extra vowels.Answer:Option A – Mischievous