Free Practice Question
CR · Critical Reasoning
555-605
Weaken
A pottery shard found in a site in Texas, 1,500 miles north of Mexico, is dated to be 9,500 years old. Researchers concluded that since the desert conditions prevented human migration north from the Mexico-United States border between 12,000 and 9,000 years ago, humans must have arrived in North America more than 12,000 years ago.
Which of the following pieces of new evidence would cast doubt on the conclusion drawn above?
Which of the following pieces of new evidence would cast doubt on the conclusion drawn above?
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(A) New archaeological findings in Arizona suggest human activity dating back to 11,500 years ago.
B
(B) A recent study indicates that an ancient river system allowed for easier migration north from Mexico at least 10,000 years ago.
C
(C) A geological survey revealed that the desert conditions were not as severe as previously thought, allowing for migration as early as 12,500 years ago.
D
(D) Radiocarbon dating of the pottery shard shows it to be at least 9,800 years old.
E
(E) Evidence from other regions indicates that humans could have migrated from Mexico to Texas in approximately 15 years after the desert conditions improved.
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H
HoughMar 4, 2025
Amazing
Details
Difficulty
555-605
Type
CR