Question: A city plans to lay out bike paths connecting various city parks. A map with the distances between the parks is shown in the figure. (Some direct connections would have to cross major highways, so these distances are not shown in the map.) Find which paths to pave so that all parks are connected but the cost is minimal.
![1502_6.png](https://secure.tutorsglobe.com/CMSImages/1502_6.png)