Identify the most relevant source of bias in this situation: To determine opinions on voter support for a downtown renovation project, a surveyor randomly questions people working in downtown businesses.
Here the aim is to find the opinions of voter support this project.
So an unbiased survey is that one which randomly survey the voters(which may include commons, working in downtown bussness, other working people,) I.e survey should contain all representative part of that society , then only it become Unbiased.
But here Survey is only done to people who working in downtown business, this is bias.
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