For Part A, we can see that the common theme of “A Letter to the Editor” and “Amelia Earhart: Pioneer” is: B. You can do something great by working hard.
For Part B, we can see that the phrases that support the theme from Part A are:
B. “proud to be part of a school with such gifted students.” (Letter).
E. "...after proving she was a world-class aviator..." (Amelia Earhart).
Theme in literature is known to be the message or idea that the author is trying to pass across and which actually appears in the work. Theme helps readers to grasp the lesson of the story.
We can see that both “A Letter to the Editor” and “Amelia Earhart: Pioneer” actually talk about doing something great if one works hard.
Learn more about theme on https://brainly.com/question/1400203