Critical Reasoning

A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three percent of all vehicles ticketed for exceeding the speed limite were equipped with them. Clearly, drivers who euip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends upon which of the following assumptions?

A) Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding hte speed limit than are drivers who do not.
B) Drivers who are ticked for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
C) The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
D) Many of the vehicles that were ticketed were ticketed for exceeding the speed limit were ticketed more than once in a time period covered by the report.
E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

IMO B.

IMO C

D is the correct choice.

Hope I'm right on this one!! - I vote for D

Negating the Assumption helps identify this one too! The conclusion goes "Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not. Bingo *regularly*

When you negate D, the argument falls apart. Negation goes "Many of the vehicles that were ticketed were ticketed for exceeding the speed limit were not ticketed more than once in the time period covered by the report". Therefore for the argument to stand, drivers with radar equipped vehicles, who make up only 3% of the population had to have been repeatedly stopped to be associated with 33% of ticketed vehicles.

Premise 1: A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors
Premise 2: thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with them.
Missing Premise (Assumption): Many of the vehicles that were ticketed were ticketed for exceeding the speed limit were ticketed more than once in a time period covered by the report.
Conclusion: Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

IMO D...."Regularly" is the keyword that made me vote for D

Cannot decide between A and D. Can anyone brake down these two choices for me please