Answer:
part a is it is the easiest to face dangers with other people part b is
Explanation:
part b is After that, the boy went out every day and practiced running and leaping and throwing and lifting, and every day he rolled some stone out of its place.”
The answer is D) It gives an example of what is stated in sentence 1.
Sentence two confirms what sentence 1 says, that "Phobias are fears that are exaggerated and completely out of proportion to any real danger that is inherent in a situation.".
If those people went in that elevator, they had a high chance of being safe. But their fears didn't allow them to do that, as they thought of the worst thing happening, even if it didn't happen. Their minds were exaggerating.