Select whether the sentence below is a simple, compound, complex or compound-complex sentence. the water entered the city from tunnels that were built under the city. a. simple c. compound-complex b. compound d. complex

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