A) The source is probably not valid because it is based on an opinion.
He or she that wrote it did not go into a lab and see if the resources are true its just based on what he thinks it is.
Answer:
In other words, our minds can affect how healthy our bodies are! On the other hand, what we do with our physical body (what we eat, how much we exercise, even our posture) can impact our mental state (again positively or negatively). This results in a complex interrelationship between our minds and bodies.
QUATS are effective in destroying fungi and some viruses