Nhận biết (M1)

In 1931, scientists first isolated a sample of the steroid hormone androsterone, which they knew existed in animals—and, they assumed, only in animals. __________ researchers would find androsterone in Swiss cheese plants (Monstera deliciosa), but this discovery wouldn't come until decades later.

Which choice completes the text with the most logical transition?

• A.

  For example,

• B.

  Eventually,

• C.

  In other words,

• D.

  Earlier,