Concept:The question tests the ability to identify the word with an incorrect spelling among common English words.Explanation:Option A: "disappointed" is correctly spelt with double p.Option B: "embarassed" is wrong because it has only one r.The correct spelling is "embarrassed" with double r and double s.Option C: "equipped" is correctly spelt with double p.Option D: "restaurant" is correctly spelt with the letters "au" in the middle.Therefore, the only wrongly spelt word is "embarassed".Answer:B. embarassed