Extra words in a sentence that add detail and are set off by commas are called nonessential elements. This is because they are not essential to the sentence and story, they are simply an added bonus, without them the sentence still makes sense.
Answer:
b seaweed could be a great source of fuel
Explanation:
The fact that this has been posted multiple times defeats its purpose, but i'm pretty sure there is a correct answer on the other post.
D. Theme. Stories relay messages to the reader
Answer:
NovaNet: A rubric (type of grading paper)