What does the link of the last node typically point to?

• A. nullptr
• B. head
• C. itself
• D. a sentinel node.

Answer: (A)

In a basic singly linked list, the link from the last node is set to null to mark the end of the list. This null terminator provides a clear termination condition for traversals: you follow next pointers until you reach a node whose next is null, indicating there are no more nodes.

That’s why nullptr is the correct answer. If the last node pointed to head, you’d have a circular list with endless looping, and if it pointed to itself, you’d create a self-loop. A sentinel node is used in some variants to simplify certain operations, but it’s not the typical end marker in a standard list.