Answer:
The benefits of building dams on the Columbia River outweigh any problems.
Step-by-step explanation:
Given that an argumentative essay involves the application of truths and proofs to substantiate the argument, instead of making the essay up with the author's impressions and beliefs.
Hence, in this case, the statement that is an example of a claim for an argumentative essay is "The benefits of building dams on the Columbia River outweigh any problems."
This is because the essay will need to list the benefits which are based on facts and evidence that can be proven anywhere, anytime.