Which is the cost of a minimum spanning tree of the weighted graph using Kurskal's Algorithm?

It weights about An example of a law being implemented by bureaucratic agency is
A. Congress passing legislation by major vote
B. OSHA deciding how hazardous substance should be stored
C. the USPS delivering mail throughout the country
D. A watchdog group blowing the whistle on government corruption

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6/9 i need more characters in my answer