City Councilwoman Kelly wants to know how the residents of her district feel about a proposed school redistricting plan. Which of the following survey methods will allow Councilwoman Kelly to make a valid conclusion about how residents of her district feel about the proposed plan? So before we even look at these, we have to realize that if you're trying to make a valid conclusion about how the residents of her entire district feel about the proposed plan, she has to find a representative sample, and not kind of a skewed sample that would just sample parts of her district. So let's look at her choices. Should she just ask her neighbors? Well, her neighbors, she might live in a part of the neighborhood that might unusually benefit from the redistricting plan or might get hurt from the redistricting plan. And so just her neighbors wouldn't be representative of the district as a whole.