I believe that the answer is A, to emphasize a point.
I'm really good at this but on number 1: it makes the sentence sound interesting. I know I did not help but I just want to give you an idea.
Answer:
Ideas that the author most wants readers to know.
Explanation:
Since this is an informational text, the key ideas would be what the author most wants readers to know.
Answer:
im stumped can someone please answer this i also need it for a test
Explanation: