Well, it tells you that thoughts (which express theme) and emotions (which express mood) are closely connected, so d. theme and mood are closely linked.
Hi! The sentence you gave is a complex sentence. For a sentence to be compound, it should contain multiple subjects or predicate. On the other hand, for it to be complex, a subordinate clause must be present.
We can notice that the clause "that were built under the city" is a clause that cannot stand alone thus this will tell us that the sentence is complex.
ANSWER: D. Complex
Post the picture next time please
