Read this excerpt from Behind the Scenes, the autobiography of African American writer Elizabeth Keckley. Keckley was once a slave in the South and later worked as a dressmaker at the White House. Which sentence best summarizes the excerpt?

Plz some scientists gaze into outer space to look for answers. some scientists seek answers in the depths of the sea. when georg steinhauser wanted answers, he looked within himself. well, he looked within his bellybutton to be exact. the austrian chemist spent three years researching the contents of his navel and the navels of others. he has solved one of life's greatest mysteries. we now know exactly what bellybutton lint contains! steinhauser presented his findings in the online version of the journal medical hypotheses. the vienna university scientist analyzed over 500 samples to determine the exact makeup of the lint. as suspected, most of the lint was made up of cotton from clothing. the fabric pieces are not alone, though. steinhauser found that the average bellybutton also contained pieces of dead skin, sweat, dust, and fat. steinhauser's notes also explained how lint accumulates. stomach hairs tend to grow in a circular pattern around the bellybutton. the hairs act like small hooks, capturing and holding contents within. shaving stomach hair can lead to a lint-free bellybutton, but don't act too hastily. although the contents of your navel may be a nuisance, research suggests that lint has a purpose. it is nature's way of protecting your bellybutton from germs and unwanted objects.

Analyze how jackson uses elements of a story to develop her message. for example, how does she create both certainty about charles' character and uncertainty in her audience about charles' identity? should laurie's parents have realized the truth earlier? how does jackson foreshadow the ending for her audience, while allowing for a surprise for laurie's parents? what is jackson's message about children and parents?

What is the meaning of the word repent based on its context in this passage? charley knew it was his fault that the whole family had to cancel their winter vacation. it all started when he’d snuck out of his house and hid at his friend laurie's place. the whole family had spent the morning looking for charley all over the neighborhood. by the time they’d found him, it was afternoon. they had missed their flight for hawaii. now charley felt guilty for his actions. he approached his father to repent for his poor behavior. but his father would not listen to him and instead declared that there would be no vacation this winter.