According to the classical conditioning perspective, a full-blown panic attack may be triggered even before the appropriate bodily changes have taken place because of the association of certain bodily sensations with:. A) unconscious conflicts.
B) increased GABA levels.
C) memories of poor attachments in childhood.
D) memories of the last panic attack.

D. memories of the last panic attack

Explanation:

A classical conditioning can be defined as a learning process that is happens or that is as a result of two stimuli's connection.

For example, if a dog bites a boy, anytime the boy sees any dog, he will being to panic as a result of the previous experience. This means the boy's sense of panic is always triggered once he sees a dog whether the dog is close-by or faraway.

Just like in the question, panic attacks can be triggered ahead of bodily changes as a result of being accustomed to a certain stimuli.

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the first settlements began along the huang river because of the importance of the huang river in the beginning of china. it goes back to the story, “the tale of emperor yu”, which references the tale of the great flood, which was caused by the huang river and was believed to create and influence china’s making.

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.