You forgot to add a string array list called sports and also to add some items in... You should have done that in the last exerice maybe you deleted it? This is an example of how to add an array list and add items to it.
ArrayList<String> SomeArrayListName = new ArrayList<String>(); SomeArrayListName.add("SomeItem"); SomeArrayListName.add("SomeItem");
I believe you are correct except for 13/13 - exercise 1 you only require the new ArrayList to be created in the correct location without any items/types added to it. That happens in the next exercise (13/13 - 2 & 3).