Final answer:
The process described refers to a) 'repression,' which is the unconscious, unintentional, and automatic way that the mind forgets information or experiences.
Step-by-step explanation:
The process of forgetting information or an experience in ways that are unconscious, unintentional, and automatic is referred to as repression. Repression is a defense mechanism identified by Sigmund Freud, which serves to keep anxiety-causing memories from entering consciousness, similar to how turning up the radio volume might help you ignore the noise of a malfunctioning car.
Eventually, the repressed memory fades from conscious awareness but might manifest symptoms in other areas of an individual's life. Other defense mechanisms include suppression, regression, sublimation, and others, but for the unconscious and automatic nature of the forgetting in question, a) repression is the correct answer.