The universal trigger for fear is the threat of harm, real or imagined. This threat can be for our physical, emotional or psychological well-being. While there are certain things that trigger fear in most of us, we can learn to become afraid of nearly anything.
Fear can be learned through direct experience with a threat, but it can also be learned via social means such as verbal warnings or observ-ing others. ... These findings demonstrate that the amygdala is in-volved in learning fear even without direct experience with the aversive event.
Communicable diseases can be spread from person to person(the flu, cold) but non-communicable diseases are diseases that can travel from person to person(like diabetes).
it is B, CDC It’s the CDC. It stands for Center for disease control. They help to keep diseases under control, and prevent outbreaks. They give out vaccinations to help eradicate diseases. So the CDC is correct. B.