Answer:
B. The trunk that my uncle bought from Peru, is in the attic.
Explanation:
In sentence A: In the attic, my uncle brought the trunk from Peru, we see that is it not clear, because it gives off the indication that the uncle brought the trunk into the attic, whilst still in fact in Peru. And in sentence C: My uncle brought the trunk from Peru into the attic, it is clear, yes, but it lacks certain punctuation that would make it easier to understand.
