Which method would you use to add a number to a specific position in a list?

Which method would you use to add a number to a specific position in a list?

• A. add()
• B. insert()
• C. put()
• D. append()

Answer: (B)

The insert() method is the appropriate choice for adding a number to a specific position in a list. This method allows you to specify both the index at which you want to insert the new item and the value of the item itself. For example, if you have a list and want to add a number at a certain index, you can call list.insert(index, value), which will shift any existing elements at that index and beyond to the right, making room for the new element. On the other hand, the add() method does not exist for lists in Python, and thus cannot be used to insert elements at specific positions. The put() method is also not a valid method for lists in Python; it is typically associated with other data structures like dictionaries or queues. The append() method adds an element only to the end of the list and does not provide functionality for inserting at a specific index. Therefore, for precise positioning of an item within a list, using insert() is essential.

The insert() method is the appropriate choice for adding a number to a specific position in a list. This method allows you to specify both the index at which you want to insert the new item and the value of the item itself. For example, if you have a list and want to add a number at a certain index, you can call list.insert(index, value), which will shift any existing elements at that index and beyond to the right, making room for the new element.

On the other hand, the add() method does not exist for lists in Python, and thus cannot be used to insert elements at specific positions. The put() method is also not a valid method for lists in Python; it is typically associated with other data structures like dictionaries or queues. The append() method adds an element only to the end of the list and does not provide functionality for inserting at a specific index. Therefore, for precise positioning of an item within a list, using insert() is essential.