Which method is used to insert an element at a specific location in a list?

The method that is used to insert an element at a specific location in a list is the insert() method. This method allows you to specify both the index at which you want to insert the new element and the value of that element. For example, if you have a list and want to add an element at a certain position without replacing the existing element at that position, the insert() method is exactly what you need.

When you call list_name.insert(index, element), the element gets added at the specified index, and all subsequent elements are shifted to the right, maintaining the order of the list. This capability to directly manipulate the placement of elements makes insert() a valuable method for list operations.

In contrast, the append() method adds an element to the end of the list, which is useful for expanding the list but does not allow for positioning at specific indices. The add() method doesn’t exist for lists in Python, and the put() method is also not applicable in this context as it is typically associated with other data structures, like dictionaries, but not with lists. Thus, insert() is the appropriate choice for inserting an element at a designated location within a list.