Ryan, a high-school football player, received a head injury during a game. following recovery, ryan was unable to remember anything that happened before the injury. however, he was able to form new relationships and new memories. in the context of forgetting, ryan's condition best exemplifies

Retrograde amnesia.

Explanation:

Retrograde amnesia may be defined as the medical condition in which the individual has memory loss before the onset of disease or injury. This affects the individual negatively affected by episodes.

Ryan after his head injury lost all the memory that has occurred before the accident. The Ryan is suffering from the retrograde amnesia as he has lost only the part of memory before the accident. The individual is able to form new social relationship.

Thus, the answer is retrograde amnesia.

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