Option A - INCORRECT.
If a study in which the rate of tire wear in the Impressivo is compared to the rate of tire wear in all automobiles in the same class, then the possibility of finding where the fault is 50/50 chance.

Option B - CORRECT.
This option will best help the authors of the report determine which of the two causes identified was responsible for the extra wear. A study in which a second set of tires, manufactured by a different company from the one that made the first set, is installed on all Impressivos and the rate of wear is measured at the exact time of longevity at which the other worn-out tires lasted will give an accurate result to the cause.

Option C - INCORRECT.
The satisfaction of workers cannot determine the issue stated in the argument, therefore, a study in which the level of satisfaction of workers in the Impressivo manufacturing plant is measured and compared to that of workers at other automobile manufacturing plants is of no use.

Option D - INCORRECT.
The study in this argument is sorely on the original tires supplied with the Impressivo by new sedan-class automobile, however, a study that determines how often improper wheel alignment results in major problems for manufacturers of other auto-mobiles in the Impressivo's class will only be of help is some areas but cannot give full details of what and where the issue erupted from.

Option E - INCORRECT.
This option should also be on lookout for during the study to determines the degree to which faulty driving techniques employed by Impressivo drivers contributed to tire wear.