Renting cars from dealerships is less expensive than renting cars from national rental firms.
Conclusion
Renting cars from dealerships rather than national firms is generally more worthwhile for locals than tourists.
Evidence
The dealership is cheaper than the national firm for everybody, but for tourists to take advantage of dealership rates, they'd have to know which dealerships offer rentals, and they'd have to pay for taxi rides back and forth from airport to dealership.
Evaluate
If you were trying to object to this, you might say or
So to strengthen the argument, we would try to rule out those objections or present new facts that agree with the Conclusion.
Because the conclusion is comparative, we're also Assuming a Difference when it comes to locals. We have to assume that and .
Goal
Look for "it's hard to determine which dealerships offer rentals", , , or anything else that agrees with the Conclusion.