Correct Answer: B
Explanation:
Option A : The level of traffic congestion probably contributes to the frequency of collisions in each town. The information given, however, includes the statement that Great port cars carelessly to be involved in collisions than are Harmonicas. Why this occurs—whether, for example, traffic congestion is a contributory factor-is not relevant.
Option B : Correct. This is clearly a factor that would affect the profitability of insurance in the two towns-and is therefore highly relevant to evaluating the argument, especially its conclusion.
Option C : The argument's conclusion is about insurance companies' profits on collision-damage insurance alone, so other types of insurance, and the rates paid for them, are not relevant.
Option D : The condition of the roads and streets in each town probably contributes to the frequency of collisions in each town. The information given, however, includes the statement that Great port cars airless likely to be involved in collisions than are Firmament cars. Why this is so—whether, for example, the condition of the roads is a contributory cause—is not relevant.
Option E : Since the argument is concerned solely with collision-insurance costs and profits in Great port and Firmament, comparing the cost of insurance in those towns with the coinsurance elsewhere would provide no useful insight.
The correct answer is B.