After a scary biking accident, alex extinguished his conditioned fear of bikes by cycling on a safe biking trail every day for a week. the reappearance of his previously extinguished fear when he rode a bike on the same trail two weeks later best illustrates:
a)discrimination.
b)operant behavior.
c)generalization.
d)spontaneous recovery.

The answer is D. Spontaneous recovery.

Explanation:

In conditioning theory, whether classical or operant conditioning, spontaneous recovery refers to the sudden reappearance of a behavior that was thought to be extinct. After the extinction of his conditioned fear of riding a bike, Alex suddenly experienced it two weeks later, this being an example of spontaneous recovery. This concept comes to show that extinction is not the same as unlearning, although he managed to eliminate his conditioned response, the behavior reapeared.

glass wants to live in a world of super heroes and villains. he have lived all his life trying to be responsible for the creating the origin story of a super hero; he schemed and caused many incidents (many of them fatal) hoping that someday someone with superpowers would show up and save the day.

he knew himself very much. he saw himself as a villain of a real-life super hero story. he was aware of his strengths (more than smart enough for being manipulative and scheming) and weaknesses (having fragile bones and having to rely on his mind to succeed).