I believe the answer is A....hope it helps
Answer:
An event surprised the scientific world
Explanation:
I
It means the people in the past did something great and we now receive the benefits. he is urging us not to forget, so that we may leave a positive mark in history.
The protagonist is the main/leading character and the antagonist s usually a character or a group of characters that oppose the story's main character, who is known as the protagonist.
