Final answer:
The answer to the question is b) Miia.
Step-by-step explanation:
The answer to the question "Who surprises Kimihito while he is making breakfast?" is b) Miia. In the statement, "Who surprises Kimihito while he is making breakfast?", the subject being referred to is "Who". The question is asking about the person or entity that surprises Kimihito, and the correct answer is Miia, one of the characters from the anime and manga series called "Monster Musume: Everyday Life with Monster Girls".