Archaeologist: The extensive network of ancient tracks on the island of Malta was most likely created through erosion caused by the passage of wheeled vehicles. Some researchers have suggested that the tracks were in fact manually cut to facilitate the passage of carts, citing the uniformity in track depth. However, this uniformity is more likely indicative of wheel diameter: Routes were utilized until tracks eroded to a depth that made vehicle passage impossible.
Which one of the following is the overall conclusion of the archaeologist's argument?The archaeologist presents an alternative to the view that the tracks were manually cut.
The main conclusion is that
the tracks were most likely formed naturally through repeated passage of wheeled vehicles.
(A) The extensive network of ancient tracks on the island of Malta was most likely created through erosion caused by the passage of wheeled vehicles.
Correct. This is the overall claim the archaeologist is defending. The discussion of uniform track depth and wheel diameter is used to support it.
(B) Some researchers have suggested that the ancient tracks on the island of Malta were in fact manually cut to facilitate the passage of carts.
Incorrect. This is the opposing view that the archaeologist rejects.
(C) Some researchers cite the uniformity of the depth of the ancient tracks on the island of Malta to support the suggestion that they were manually cut.
Incorrect. This describes evidence used by the opposing researchers, not the archaeologist's conclusion.
(D) The uniformity of depth of the ancient tracks on the island of Malta is probably indicative of the wheel diameter of the carts that passed over them.
Incorrect. This is a supporting claim used to explain the uniformity and defend the broader conclusion.
(E) The ancient tracks on the island of Malta were utilized until they eroded to a depth that made vehicle passage impossible.
Incorrect. This is also supporting evidence explaining how the tracks could have developed naturally.
Answer: (A)