Nhận biết (M1)

To determine the approximate age of ocher artifacts excavated from an archaeological site in China, archaeologist Fa-Gang Wang and colleagues collected samples of sediments surrounding the ocher artifacts; these samples were then analyzed using a method known as optically stimulated luminescence (OSL) dating. __________ OSL dating indicated that the ocher artifacts were between 39,000 and 41,000 years old. Which choice completes the text with the most logical transition?

• A.

  In addition,

• B.

  Similarly,

• C.

  Ultimately,

• D.

  By comparison,