The answer is D.
Telemachus does not wish Odysseus' identity to be revealed to his mother. Thus, he sends her away at an opportune moment, realizing she's getting a bit too big for her britches. He does not want his mother influencing the events to come in any way.
Sentence three is the correct sentence. All of the others have some grammatical error in them. In the first, "felled" is incorrect and not a word. It also says "walk boots" instead of the correct verbal adjective "walking boots." In the second, "weren't" is not usually considered very academic and "tight" should be in the adverb form "tightly." Number four is wrong because it used "walked boots" instead of of "walking boots" and "tight" instead of "tightly." "Fallen" is incorrect in number 4, because it should have been "had fallen" if one was going to use the verb "fallen."
Our; Green; in; but; sleep; stop
The answer is a first I hope this helps