The Breadth First Search algorithm has been implemented using the queue data…

Solution summary: The sequence Q M N P R O is a valid BFS order when starting at node Q (assuming Q's neighbors are visited in the order M, N, P).

1. Start at Q: mark Q visited and enqueue it. Queue = [Q]. Visit order so far: Q.

2. Dequeue Q and discover its neighbors in the order M, N, P. Enqueue M, N, P. Queue = [M, N, P]. (Nodes M, N, P are now discovered.)

3. Dequeue M and visit it. M's undiscovered neighbor R is enqueued. Queue = [N, P, R]. Visit order: Q, M.

4. Dequeue N and visit it. N's undiscovered neighbor O is enqueued. Queue = [P, R, O]. Visit order: Q, M, N.

5. Dequeue P and visit it. P has no new neighbors to enqueue (O is already enqueued). Queue = [R, O]. Visit order: Q, M, N, P.

6. Dequeue R and visit it. Queue = [O]. Visit order: Q, M, N, P, R.

7. Dequeue O and visit it. Queue = []. Final visit order: Q, M, N, P, R, O.

Conclusion: The BFS traversal order Q M N P R O matches the steps above, so the option showing Q M N P R O is correct.