To solve this question, the user needs to have knowledge about programming concepts and specifically about the instanceof operator.

Now, let's go through each option and explain why it is right or wrong:

A. A methods in object: This option is incorrect. instanceof is not a method in an object. It is an operator that is used to check if an object belongs to a particular class or its subclasses.

B. An operator and keyword: This option is correct. instanceof is both an operator and a keyword in programming languages like Java. It is used to determine if an object is an instance of a particular class or its subclasses. The instanceof operator returns true if the object is an instance of the specified class or a subclass, and false otherwise.

Therefore, the correct answer is:

B. An operator and keyword