As someone who writes books, I'd normally use quotation marks, and the person is obviously talking, so the first one should be correct.
31. C
32. E
33. E
Given the context here, these should be correct.
<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>
