input: Write a python function to access an item from a list given its index.
  assert access_list_item([1, 2, 3, 4, 5], 3) == 4
  assert access_list_item(['a', 'b', 'c', 'd'], 2) == 'c'
  assert access_list_item([10, 20, 30, 40, 50], 0) == 10
output: def access_list_item(lst, index):
      return lst[index]