Nhận biết (M1)

It was long thought that maize was domesticated solely from parviglumis—a subspecies of teosinte, a wild grass—in Mexico's lowlands about 9,000 years ago. However, a 2024 analysis has revealed that between 15 and 25 percent of maize's genes can be traced to a second __________ highland subspecies of teosinte that was hybridized with maize around 4,000 years after the initial domestication.

Which choice completes the text so that it conforms to the conventions of Standard English?

• A.

  ancestor; mexicana, a

• B.

  ancestor: mexicana, a

• C.

  ancestor mexicana a

• D.

  ancestor, mexicana. A