Answer:
B. it claims to be, but is not, a science.
Step-by-step explanation:
A pseudoscience is any kind of information that is said to be based on scientific facts, or even to have a high standard of knowledge, but which does not result from the application of scientific methods. It is a claim, belief or practice that presents itself as scientific, but does not adhere to a valid scientific method, lacks evidence or plausibility, cannot be reliably tested, or otherwise has no scientific status. In short, a pseudoscience, like astrology, claims to be, but is not, a science.