Answer:
Anterograde amnesia
Step-by-step explanation:
Anterograde amnesia -
It is the mental condition , where the ability to create memories gets complete vanished , after some unfortunate event , is known as anterograde amnesia.
As , any accident can hamper the memory of the person and does not remember the any activity of the accident ,
Similar condition happened with Frank ,
Hence , Frank is suffering from Anterograde amnesia .