Concept:Spelling errors often occur due to incorrect letter combinations. This question tests your ability to identify such mistakes.Explanation:Option A: Confession – correctly spelled. It means an acknowledgment.Option B: Dimension – correctly spelled. It refers to a measurable extent.Option C: Precision – correctly spelled. It means exactness or accuracy.Option D: Aberrasion – misspelled. The correct spelling is Abrasion, which means scraping or wearing away.Thus, the word with a spelling error is Aberrasion.Answer:D. Aberrasion