What is the passage mainly about?

Amelia Earhart is probably the best-known female pilot in the world. During her life, she did amazing things. Earhart was one of the first woman pilots in history. She set many flight records. One of the most famous was her solo flight across the Atlantic Ocean. She was the first woman to fly across the ocean alone.

   Amelia Earhart was more than just a great pilot. She was a best-selling author too. She wrote many books about her flying experiences. Earhart also enjoyed helping other women succeed. She helped start the all-women pilot group called the Ninety-Nines, and she fought for women's rights.
    Sadly, Earhart's disappearance is a big reason why she is remembered today. When she tried to fly around the world, she went missing with her flight partner, Fred Noonan. On July 2, 1937, Amelia Earhart vanished somewhere over the Pacific Ocean, never to be seen again. 
What is the passage mainly about?
 Earhart's piloting skills
 Earhart's disappearance
 Earhart's accomplishments
 Earhart's flight across the Atlantic