I think B,
Since new environmental regulations were enacted last year, factories emitting pollutants above a certain level must install advanced filtration systems. Therefore, any factory that has not installed such a system since last year must be emitting pollutants below the required level.
This argument assumes that not installing an advanced filtration system is sufficient to conclude that the factory's emissions are below the required level. This overlooks the possibility that other factors or existing systems might already keep emissions below the required level.The reasoning above exhibits a flaw similar to one in which of the following?
A. Any animal classified as a reptile must be cold-blooded, so if an animal is not cold-blooded, it cannot be classified as a reptile.
Incorrect - It does not assume that absence of cold-bloodedness guarantees non-classification as a reptile, so it does not share the same flaw as the original argument.
B. All licensed drivers must pass a driving test, and since Jorge has passed a driving test, he must be a licensed driver.
Correct - This argument assumes that passing a driving test is sufficient to conclude that Jorge is a licensed driver. It overlooks the possibility that Jorge might have passed the test but not yet completed other necessary steps to obtain a license. This mirrors the original argument's flaw of assuming a necessary condition ensures a sufficient condition.C. A person who is an elected official must reside in the district they represent, so anyone who does not reside in a particular district cannot be an elected official there.
Incorrect - This argument correctly applies a necessary condition for being an elected official. It does not assume that absence of residency guarantees non-status as an elected official, so it does not share the same flaw as the original argument.
D. Every person entering the country must go through customs; therefore, the increase in the number of customs agents will necessarily lead to a decrease in the number of people entering the country.
Incorrect - This argument assumes a direct cause-effect relationship between the number of customs agents and the number of people entering the country. It does not assume a necessary condition as sufficient like the original argument.
E. All professional athletes must undergo regular drug testing; hence, if someone has not undergone drug testing, they must not be a professional athlete.
Incorrect - This argument correctly applies a necessary condition undergoing drug testing for being a professional athlete. It does not assume that absence of drug testing guarantees non-status as a professional athlete, so it does not share the same flaw as the original argument.