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
Answer:
Denotation means : ''the literal or primary meaning of a word, in contrast to the feelings or ideas that the word suggests.''
So, the correct answer would be <u><em>C. Missing.</em></u>
Answer:
That is the ball and socket joint