Which web page author is most likely to be an unbiased source of information about renewable energy? a business that produces energy from nonrenewable resources a group seeking to change government policy toward renewable energy an expert with a background and expertise in renewable energy a business that sells renewable energy equipment

The non-biased source would be the expert with a background and expertise in renewable energy, because they would be most informed about the topic. And would not be trying to sell you their product. Unlike the business or the government policy. 
Hope this helps.

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