_____ refers to discomfort, inhibition, and excessive caution in interpersonal relations

In 1960, Gibson and Walk used the "visual cliff" to ascertain whether crawling infants had _____

Fill in the blank with correct word

Leticia was working out when she was suddenly seized by panic. She remembers her heart beating really fast, sweating, and feeling short of breath. Now, whenever she thinks about going to the gym, she remembers that feeling and does not go

This is best explained by: a) the fear of fear hypothesis b) a vicious circle of fear increasing ANS activation, which in turn is catastrophically interpreted, increasing anxiety c) agoraphobia d) excessive attempts to relax that fail.