According to the given information, the least possible diagram is as shown below:
Conclusions: I. No kite is a rope → False (It is not possible as there is no relation between kite and rope)
II. No rope is a kite → False (It is not possible as there is no relation between rope and kite)
III. Some ropes are stones → True (It is possible as "All stones are ropes" so some ropes are definitely stones)
IV. All ropes are stones → False (It is not possible as "All stones are ropes" but all ropes are not stones so the given conclusion is false)
Here, only conclusion III follows.
Hence, the correct answer is "Only conclusion III follows".