Well, “puts” is a method defined in the Kernel module, which is included in the Object class, which means it is available in all contexts (since every object is

Well, “puts” is a method defined in the Kernel module, which is included in the Object class, which means it is available in all contexts (since every object is a subclass of the ‘Object’ class). So, to answer your question, the puts method belongs to the Kernel module object, and the Kernel module object is an instance of a Module object.