A polling organization wants to estimate the proportion of voters in a city who support a new policy. The city has 250,000 registered voters. The organization conducts a random sample of 500 voters and finds that 280 of them support the policy. Based on this information, which of the following actions would most likely lead to a more reliable estimate of the true proportion of voters who support the policy?
Increasing the sample size to 1,000 voters.
Surveying only voters who have previously voted in every election.
Conducting the survey only in one specific neighborhood of the city.
Asking voters if they support the policy while also providing arguments for and against it.
