I'm laughing at this first question because it doesn't seem necessary to know for graduation in the future lol.... Okay so the answer is D. because the whole paragraph was saying what he was packing and that he was excited for his trip so it doesn't make sense to go off topic about how far away his house is from the camp or that he spent last summer somewhere else and that there will be horses there. For an ending, you want to make sure its an ending point and not an unnecessary sentence.