Can you please help me with my chem homework?

I'm doing the same homework, and I'm going with #3 because, think about it, adding more water will dissolve the solid Ag2SO4, not create more of it. Also, try out all the other answers. If you got "doing any or all of these choices" for question 12 on the homework, you'll see what the answer to 13 has to be. P.S. I haven't submitted any of my answers yet, so I can't say for sure that the answer is #3.