After the national speed limit of 55 miles per hour was imposed in 1974, the number of deaths per mile driven on a highway fell abruptly as a result. Since then, however, the average speed of vehicles on highways has risen, but the number of deaths per mile driven on a highway has continued to fall.
Which of the following conclusions can be properly drawn from the statements above?

Question

Examsnet · Accepted Answer

Correct Answer is :  The speed limit alone is probably not responsible for the continued reduction in highway deaths in the years after 1974.

GMAT Verbal Reasoning Practice Test 3