Nhận biết (M1)

While researching a topic, a student has taken the following notes:

• The Clovis First hypothesis holds that an ancient people called the Clovis were the first to settle North America.

• The Clovis are thought to have arrived about 13,000 years ago.

• Stone tools from the Saltville site in Virginia date to roughly 16,000 years ago.

• Those tools support the idea that people were living on the continent before the Clovis arrived.

• Over a dozen sites across North America have since yielded pre-Clovis material.

The student wants to explain the implications of the discovery at the Saltville site. Which choice most effectively uses relevant information from the notes to accomplish this goal?

• A.

  According to the Clovis First hypothesis, the Clovis, an ancient people, were the earliest to settle North America, showing up about 13,000 years ago.

• B.

  Saltville, in Virginia, ranks among the dozen-plus North American sites that have produced pre-Clovis material.

• C.

  The roughly 16,000-year-old stone tools from Saltville, a site in Virginia, deserve attention: they bear importantly on the Clovis First hypothesis.

• D.

  The roughly 16,000-year-old stone tools unearthed at Saltville cut against the Clovis First hypothesis, hinting that people reached North America before the Clovis did.