Sarah Boone was one of the first African American women to receive a patent in the United States. She designed a new kind of ironing
board.
Her board was narrow to make it easy to place it inside sleeves
and foldable so that it could be stored after use.
How should the last sentence in the paragraph be written to create parallel structure?
1. Her board was narrow to be placed inside sleeves and was also foldable for storage after use.
2. Her board was narrow so it could be placed inside sleeves and foldable so it could be stored after use.
3. Her board was narrow so it was able to be placed inside sleeves and foldable to make it easy to store after use.
4. Her board was narrow to make it easy to place it inside sleeves and foldable so that after each use it could be stored.