Which evidence best supports the claim in an argumentative essay that the voting age should be changed to sixteen?
a blog by a sixteen-year-old who works for a presidential campaign
a science magazine article about how sixteen-year-olds view adults
a research study showing that sixteen-year-olds can understand complex issues
a newspaper article about sixteen-year-olds in different cultures around the world

I believe the best answer to be letter C as well:

a research study showing that sixteen-year-olds can understand complex issues.

Explanation:

If we are writing an essay and want to support the claim that the voting age should be changed to sixteen, we need to find evidence that will clearly help defend the idea that 16-year-olds are perfectly capable of voting with awareness. Now, let's briefly analyze each one of our options:

- The first option could be useful as an example inside our supporting evidence, but not as supporting evidence on its own. Readers might very well claim that having one 16-year-old with political awareness is far from proving that all of them are the same.

- The second option is too general. Although voting involves the way in which 16-year-olds perceive adults, the article does not revolve around the theme in a political way. And, depending on what the article shows, it might work against our claim instead of for it.

- Voting and politics are complex issues. Therefore, if we can prove that 16-year-olds are completely capable of understanding complex issues, we might link that proof to our claim that they can vote. There would be no reason to believe they wouldn't be able to comprehend the details involving elections and candidates.

- Finally, the newspaper article about 16-year-olds in different cultures around the world might and might not help. It really depends on what point of view it takes concerning the subject. It could have some valuable information, but it could also contain nothing of validity for our topic. Again, it is too general.