John is on the way to his university to take an exam

John is on the way to his university to take an exam. He is disturbed by thoughts of failing because he is not prepared for the exam. However, he pushes away thoughts of failing and focuses on studying. In this scenario, John is using _____.

a. suppression

b. free association

c. repression

d. systematic desensitization

Patrick was recently involved in a car accident in which he was critically injured. He is unable to recall the events that led to the accident. Patrick is suffering from ________.

a. anterograde amnesia

b. retrograde amnesia

c. dissociative amnesia

d. infantile amnesia