Considering the contexual meaning the words “darted” and “flipped” tell you that the objects "moved quickly and unusually."
This is because the word darted means to run or move suddenly to somewhere.
At the same time, the word flipped means to turn over, which can be unusual compared to the normal movement direction.
Hence, in this case, it is concluded that the correct answer is option D. "moved quickly and unusually."
Learn more about contextual meaning here: https://brainly.com/question/12707953