Read the passage below.One benefit of recycling is that it reduces the amount of trash in our nation’s landfills. __________, recycling conserves natural resources, such as timber and water.

The second sentence adds another benefit of recycling, so “also” is the best transition. The sentence reads, “Also, recycling conserves natural resources, such as timber and water.” “However” signals a contrast, while “because” and “then” do not fit the relationship between the ideas.

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