Answer:
I believe the option that best states the flaw in the argument is letter B. If there were no curfews, teenagers would be less likely to encounter harm.
Step-by-step explanation:
According to the argument, teenagers come to harm because they sneak out after curfews and, therefore, if there were no curfews, no harm would happen. That is a very flawed logic. Curfew or no curfew, there is harm in staying out too late. A teenager who is under a curfew time and a teenager who is free to come and go as he pleases are both likely to encounter harm by staying out late. Curfews exist because harm exists, not the other way around.