Answer:
to avoid dropped quotations, smoothly leading the reader into the source's ideas Explanation:
They can both heal and hurt people
This sentence is basically saying that the large rock was competing in the race. In order for this not to happen, one could say, 'As Maura was competing in the race, a large rock that was sitting on the track caused her to trip and stumble a few steps.'
Hope this helped
B) alliteration . if you look up the definition of the two answers it would help you out!!!