Nhận biết (M1)

A recipient of the Othmer Gold Medal and the Davy Medal from the Royal Society, __________ known as femtochemistry when he devised an optical spectroscopy technique that allowed researchers to study ultrafast chemical reactions occurring within molecules.

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

• A.

  the result of chemist Ahmed Zewail's expansion of the limits of measurability was the introduction of a new scientific discipline

• B.

  the introduction of a new scientific discipline by chemist Ahmed Zewail led to the expansion of the limits of measurability

• C.

  the limits of measurability were expanded by chemist Ahmed Zewail who introduced a new scientific discipline

• D.

  chemist Ahmed Zewail expanded the limits of measurability and introduced a new scientific discipline