<span>(over 800 miles) because it modifies the verb "stretch." The others all modify nouns. </span>
The answer is D.
There is no single topic sentence within this piece of writing. A topic sentence is used to summarize what is going to be, or what has been written about, and there is no such sentence within this piece.
The correct answer is C) The baby cried.
<u><span>
An </span>independent clause<span> is a group of words with a subject and a predicate. It expresses a complete thought and can stand alone as a sentence.</span></u>