What is the error in: "Apparently, it is no one's business that Baxter had desert for breakfast?"

The sentence contains a usage error involving the word "desert." In this context, the intention is to convey that Baxter had a type of food typically eaten as a sweet course after a meal, which is "dessert." The term "desert" refers to a dry, barren area of land, which does not fit the intended meaning. Therefore, substituting "desert" with "dessert" clarifies that the focus is on the food item, making the sentence accurate and meaningful. The other words in the sentence function correctly and do not contribute to any misunderstanding, emphasizing that the mistake lies solely in the misused term.