Answer:
C. 55, 30
Step-by-step explanation:
Even though each state in the United States has different speed limits. However, in a situation whereby the speed limit is not posted, the default speed limit recommends that drivers maintain a speed of "55" mph on the highway and "30" mph in the city.
The highest speed limit in the United States is 85mph on a rural highway in Texas while the lowest generally for the country is 30mph in a residential area.