I think it’s c
It can’t be A because they were in a language class so knew a bit about the country
It can’t be B because all the other times they did it there wasn’t conflict
It can’t be D because there is no proof that they won’t repeat their mistake
That’s why it can only be C
Pls give me a brainliest if this helped thx
Answer:
Which has a fascinating history
Explanation:
The best adverb clause which would complete the sentence is given above. This is because, the sentence is talking about Mexico as a country in which Oscar was born in. The country has a fascinating history going by its rich culture and traditions of the people living in it.
I'm not sure but I think it needs no comma. Hope this helped.