To determine who ran 212 km in 45 minutes based on the graph showing the rates, we need to convert the distance and time into a rate (speed).
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The rate can be calculated as:
\[ \text{Rate} = \frac{\text{Distance (km)}}{\text{Time (minutes)}} \]
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For 212 km in 45 minutes:
\[ \text{Rate} = \frac{212 \text{ km}}{45 \text{ minutes}} \approx 4.711 \text{ km/min} \]
Now, if the graph you mentioned indicates each friend's speed at certain points, you should look for a point that corresponds to approximately 4.711 km/min.
Without the actual graph or more specific details about the rates of the friends listed, I can't definitively say who ran that distance. You should match the calculated rate to the points on the graph to identify the correct person.
If, however, you have already examined the graph and determined who the corresponding point was, then that person would be your answer.