Final answer:
A unit rate compares the quantity of one unit to another unit. In this case, $10 per hour compares the dollar amount to the hour amount.
Step-by-step explanation:
A unit rate is a ratio that compares two quantities with different units, where one unit is equal to one. In this case, the unit rate is $10 per hour. To determine the correct answer choice, we need to compare the dollar amount to the hour amount. Since the rate is $10 for 1 hour, the correct answer is C-It compares $10 to 1 hour.