Explanation:

Let’s break it down, step by step:

- There are 8 people: A, B, P, C, D, O, Q, E (those with vowels—A, O, E—can’t sit next to each other).

- “A sits 3rd to the right of D.” So, if D is at position 1, A is at position 4.

- “Two persons sit between P and A.” So if A is at position 4, P can be at 1 or 7.

- “B sits adjacent to O.”—B and O are next to each other.

- “O sits 4th to the right of E.”—So if E is at position X, O is at (X+4) mod 8.

- “Q sits 3rd to the left of O.”—So counting 3 left from O, you get to Q.

Now, the key: you’re asked who sits immediately to the left of B.

Let’s try the options—

- If you work through every step, it turns out: E is the person sitting immediately to the left of B.

—A is NOT to the immediate left of B.

—P is also not the answer.

—Q is not the answer.

—O is not the answer.

So your answer was Option 1 (A).

?? The correct answer is:

Option 4: E

E is the one immediately on B’s left. Every other option doesn’t fit all the requirements if you lay out the arrangement.