Repetition is a literary device hope that helps
A source in which a researcher would most likely find unbiased information would be from an encyclopedia article.
Hope this helps!
<span>c)t is possible that the piñata originated somewhere other than China.
The sentence says that many people believe it originated in China, but clearly it is not a known fact, where the pinata originated. This means that since there is doubt, the pinata might have originated somewhere other than China.</span>