In an Attempt to Reduce the Use of Gasoline, a City

Multiple Choice

In an attempt to reduce the use of gasoline, a city imposed a $2.50 per gallon tax on gasoline in 2010. A researcher working for the city located data on annual gallons used for the five years leading up to the gas tax (to provide a baseline) and located data for the five years after the start of the gasoline tax (to show the consumption pattern after the tax) . Which of the following best describes this study design?

A) A-B-A-B design
B) Changing-criterion design
C) Interrupted time-series design
D) Regression-discontinuity design