Answer:
IT'S TIME TO PLAY BALLS LICKING
The correct answer of the given question above would be option C. The sentence in which the prepositional phrase best modifies the verb saw is: through the window, I saw the bird flying. The prepositional phrase of this sentence is "through the window" with the preposition "through" and this modifies the verb "saw".
The author of the novel "Heidi" is called Johanna Spyri.