|Question 24Verbal

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Scientists studying asteroid deflection have focused on secondary objects such as S/2020 (2013 PY6), a moonlet orbiting the near-Earth asteroid 2013 PY6. In 2022 NASA intentionally crashed a probe into just such an object, successfully altering its orbit. Scientists have yet to demonstrate, _____ that 2013 PY6 and other primary objects would be similarly affected.
Which choice completes the text with the most logical transition?
for example,
A
though,
B
likewise,
C
moreover,
D