Detailed Instructions: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.
Q: The Dawn spacecraft has already provided a stunning look at the surface of Ceres - and its latest shot is the most detailed yet. It reveals pockmarked craters on the surface that have been formed from the re-impact of debris from larger impact sites. But the image doesn’t reveal any more clues about the ‘bright spots’, or so-called 'alien' flashes, that are continuing to dumbfound scientists and the public alike. This image was taken by the Dawn spacecraft on 23 May from a distance of 3,200 miles (5,100km). The resolution is around 1,600ft (480 metres) per pixel - the best ever of the dwarf planet so far.Nasa scientists in California revealed the best image of Ceres yetIt was taken by Dawn from a distance of 3,200 miles (5,100km)The image reveals small craters caused by the 're-impact' of debrisBut the bright spots on the surface of the dwarf planet remain a mystery 
 Questions:Over the next few months, _ will lower its altitude to enable it to see as much of the surface as possible, and reveal more interesting features like this. (A) Dawn (B) Ceres (C) Nasa (D) California
A:
(A)