What sampling method could you use to find the percent of adults your community who support building more nuclear power plants? What is an example of a survey question that is likely to yield unbiased information?

first find the number of adults in the city then find the number of people who support power plant and if the precent adults in the city is 100% then take the number of people that support power plants and find out what precent of adults In the city are power plant supporters.