<em>A sentence</em> refers to the pair of words which is complete in itself. In other words, a sentence contains a subject and a predicate or it may contain a main clause and one or more subordinate clauses to convey a command, exclamation, question or statement.
In the following statements, the sentences have subject and predicate,
B. The ferret has a silly look on its face.
<em>'The ferret'</em>- subject
<em>'has a silly look on its face'</em>- predicate
C. I really do like spinach.
<em>'I'</em> - subject
<em>'really do like spinach'</em>- predicate
D. The men’s bathroom is out of order.
<em>'The men’s bathroom'</em>- subject
<em>'is out of order'</em>- predicate
Hence, the sentence 'Winding up the pole' doesn't have a subject that's why it is not a sentence.
Answer:
I would agree with you that it's C, as it's the only one that makes sense.
Answer:
Incomplete thought
Explanation:
If the highlighted portion was a thought on it's own, it wouldn't make any sense.