Start here — and please do not paste the question
This board is for the question you got wrong and cannot see why. The useful version of that post has three parts: what the question was asking, which answer you picked, and the reasoning that made you pick it. The third part is the one that matters. If you only say "the answer was C and I put A", the best anyone can do is explain C to you — which you can already read in the explanation. If you say why A looked right, someone can find the exact place your reasoning turned. That is the thing you can actually fix, and it is usually the same place every time. One rule, and it is not negotiable: do not paste official test material. SAT questions and passages are copyrighted, and that includes a single sentence of one. Describe it in your own words instead. "A passage about a biologist reintroducing wolves, and the question asked what the underlined sentence does" is enough for anyone to help you. It is also better practice than pasting, because restating a question in your own words is most of the work of answering it. Posts containing copied test material get removed. That is not a judgement about you — we simply cannot host it.