Which of the following yes/no questions is not formed accurately?

• A. Have you all the things that you need for the trip?
• B. Do you have all the things you need for the trip?
• C. Have you got all the things you need for the trip?
• D. Do you have all the items you need for the trip?

Answer: (A)

The key idea is how we form yes/no questions about possession. In English, you invert the auxiliary with the subject: for simple present you typically use do-support, as in “Do you have all the things you need for the trip?” Alternatively, in British usage you can use the present perfect/possession form “Have you got all the things you need for the trip?”

In the sentence given, starting with “Have you all” and then lacking the main verb after it is not grammatically complete. You need either the verb “got” to make it a present-perfect/possession question, or you switch to the do-support form. So the natural, correct forms are: “Do you have all the things you need for the trip?” or “Have you got all the things you need for the trip?” The error here is the missing “got” (or the missing switch to “Do”).