Which of the following is an invalid method/function in a Python dictionary?

Correct option is B

The remove() method is invalid in Python dictionaries. Dictionaries do not have a remove() method. Instead, methods like pop(), popitem(), and get() are used to perform operations related to removing or accessing items.
Important Key Points:
1. popitem(): This method removes and returns the last item (key-value pair) from the dictionary. If the dictionary is empty, it raises a KeyError.
2. get(): This method returns the value for the specified key if the key exists in the dictionary. If the key doesn't exist, it returns None (or a default value if provided).
3. pop(): This method removes and returns the value for a specified key. If the key is not found, it raises a KeyError, unless a default value is provided.
Knowledge Booster:
· Option (a): popitem() is a valid method in Python dictionaries used to remove and return the last item in the dictionary.
· Option (c): get() is a valid method in Python dictionaries used to retrieve the value for a given key.
· Option (d): pop() is a valid method in Python dictionaries used to remove a key-value pair by key and return the corresponding value.