Important and insignificant are opposite. Insignificant means not important, so the correct answer would be B, peaceful.
Important is to insignificant as restless is to peaceful.
<span>The difference between a sentence and a fragment is that a sentence is a complete thought and can stand on its own, whereas a fragment is incomplete and has to exist within another sentence. Thus, 1. is a sentence. 2. is also a sentence. 3. is a fragment. 4. is a sentence. and 5. is a sentence. Only and skate as fast as possible is a fragment. </span>
He drunkened polyphemus and while he was sleeping he stabbed his eye