Answer to this question is b
Answer:
False.
Explanation:
Pseudoscience are not exact and precise. In fact, they are mistaken practices/methods that are not part of the scientific method or based on the scientific method.
Answer: The answer is the last option, Backflow of blood through a defective valve.
Explanation: Hypotension causes high blood pressure, and the other two options are not related to heart murmurs. A hear murmur is when the blood isn't flowing in the right direction causing the hear to beat irregularaly.