According to the textbook's discussion of anxiety:
a) panic attacks are called the fear of fears because people feel that they are dying.
b) in many situations it is sensible to feel anxiety, and in fact, these emotions are adaptive.
c) post-traumatic stress disorder occurs within the first two days after a trauma.
d) it is unusual for a mentally healthy person to experience a panic attack.

A) panic attacks are called the fear of fears because people feel that they are dying.

Explanation:

Anxiety is a situation of fear and tension which can be felt mentally as well as physically. Discussion of anxiety can be define as the panic attacks which are associated with the fear of dying.

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: