Nhận biết (M1)

Work on deflecting asteroids has settled on secondary bodies such as S/2015 (190208), a moonlet going round the near-Earth asteroid 2006 AQ. NASA drove a probe deliberately into just such a body in 2022 and altered its orbit successfully. Whether 2006 AQ and other primary bodies would answer the same way, ______ nobody has yet demonstrated.

Which choice completes the text with the most logical transition?

• A.

  for example,

• B.

  admittedly,

• C.

  moreover,

• D.

  likewise,