To find the median daily high temperature for each city, we first need to arrange the data in numerical order:
Dayton: 77, 79, 82, 85, 85, 86, 87, 88, 90, 91
Laredo: 79, 80, 81, 82, 84, 86, 87, 88, 88, 92
The median for both data sets is the middle value:
For Dayton: 86
For Laredo: 86
Therefore, both cities have the same median daily high temperature of 86°F. So, none of the provided responses are correct.