The answer on E2020 is
A. It connects the man to the spade and the act of digging in the dirt.
(I just completed the Test Review with a 100%)
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".
Answer:
2 or 1 but I think it's 2...