I recently had this lesson and quiz, even though you didn't provide the answers, i'll answer it with the answer that I found was correct.
A) It was a breakthrough in his research.
Hope this helps!~
Answer:
The main idea helps the reader understand what is going on in the story.
Explanation:
Answer:
this proves is the answer
Answer: D
Explanation: honestly i’m doing this rn and i think this is the best answer. let me know if it isn’t though.