I feel like I didn't do my part
A parallel sentence mentions the same grammatical expression twice. I would go with "D". 'Passed' and 'Demonstrated' are both past tense words that express the same past tense grammatical idea.
If you have more questions, feel free to ask me.
- <em>The history of manned space flight: </em>The topic is <u>appropriate</u> for research because it is specific and will find almost the same information in every source you consult.
- <em>Breeds of dogs in the Westminster Dog Show: </em>The topic is <u>too narrow</u> which might make the research a little empty (with not too much information).
- <em>The history of domestic animals (house pets): </em>The topic is <u>too broad </u>and the research might not be focused but too general.
- <em>The results of Project Genome: </em>The topic is <u>appropriate</u> for research because it is relevant and specific
- <em>The formation of cumulonimbus clouds: </em>The topic is <u>too narrow </u>and might make the research empty/flat and lacking in relevance
- <em>The results of the Battle of Gettysburg: </em>The topic is <u>appropriate</u> for research because it is historically relevant.
<u>EXTRA INFO: </u>
<em>When you start developing a specific topic, the main problem you may face is having a topic that is too narrow or too broad.</em>
Your topic is too narrow when you find very little information about it
Your topic is too broad when you find too many sources or too much information that it might not even be focused but too general.
And when your topic is appropriate it is when you find the important and needed information or you could also narrow a topic that is too broad.
Hope this answer helps you! Have a great day.
