The correct answer is B. Curfews guarantee that fewer young drivers will be on the road during dangerous late-night hours.
To begin, an argument is a statement or claim that supports one specific point or position, which in this case is the need of establishing curfews for teens which means the author of this argument believes regulating the at which time teenagers should not be outside their home is positive in some way or has certain benefits. Additionally, for this argument to be complete, the author needs to use evidence to prove the argument as valid, this evidence includes statistics, references to experts, reasons or examples.
This means a statement that supports the argument of the author needs to show a positive aspect or consequence of curfews for teens or explain the reasons why the town government should establish this type of regulations. Considering this, the statement that best supports this argument is “Curfews guarantee that fewer young drivers will be on the road during dangerous late-night hours” because this statement proves the point of the argument by showing a positive consequence of establishing curfews which in this case is more safety for teenager while driving.