The correct answer is: A. Has the window been shut by you?
The other options are incorrect because they use the wrong tense. The question is in the present perfect tense, so the answer must also be in the present perfect tense. Option A is the only option that is in the present perfect tense.
Option B is incorrect because it uses the simple past tense. The simple past tense is used to talk about events that happened in the past and are not happening anymore. In this case, the window is still shut, so the simple past tense is not appropriate.
Option C is incorrect because it uses the present progressive tense. The present progressive tense is used to talk about events that are happening now. In this case, the window is not being shut now, so the present progressive tense is not appropriate.
Option D is incorrect because it uses the past progressive tense. The past progressive tense is used to talk about events that were happening in the past at a specific time. In this case, the window is not being shut at a specific time, so the past progressive tense is not appropriate.