To solve this question, let's analyze the answers given by each person and determine who is who:
- The person sitting on the left said that the person in the middle is John.
- The person sitting in the middle said that his name is Joe.
- The person sitting on the right said that the person in the middle is Jack.
Let's analyze each option to see which one matches the given answers:
Option A) Jack on the right. The middle one is John. Joe on the left - According to this option, the person sitting on the left is Joe, but the person sitting in the middle is John. However, the person sitting on the left said that the person in the middle is John, so this option is incorrect.
Option B) Joe on the Right. John in the Middle. Jack on the left - According to this option, the person sitting on the left is Jack. However, the person sitting on the left said that the person in the middle is John, so this option is incorrect.
Option C) John on the Left. The middle one is Jack. Joe on the Right - According to this option, the person sitting on the left is John. However, the person sitting on the left said that the person in the middle is John, so this option is incorrect.
Option D) John on the right. The middle one is Jack. Joe on the left - According to this option, the person sitting on the left is Joe, which matches the answer given by the person sitting in the middle. Additionally, the person sitting on the right said that the person in the middle is Jack, which also matches this option. Therefore, this option is correct.
Therefore, the correct answer is option D) John on the right. The middle one is Jack. Joe on the left.