Answer:
The revision that will correct the punctuation error in the sentence is:
2. replacing the comma after "aside" with a semicolon
Explanation:
The sentence can be basically divided into two main ideas. One concerns the shopping list made by Angela's brother. The other concerns Angela picking up the real list to go shopping. The first idea is developed by listing the silly items Angela's brother wrote down and saying that Angela put that list aside. To start the second idea, a comma does not suffice. Therefore, we need to place a semicolon after "aside", since that is where the first idea ends. The semicolon will come before "then", which is the mark of what Angela did next, the second idea. The correct sentence is:
"Chuckling, Angela looked over her little brother's shopping list of bubble gum, race cars, and a puppy, and laid it aside; then, ignoring Harry's protests, she picked up the real list and headed for the door."
