Answer:
The correct answer is - cryptomnesia.
Step-by-step explanation:
Cryptomnesia is more likely to takes place when an individual falsely claims that an idea, thought or source is their own and original thought but actually encountered or heard earlier and forgot about it.
On some level, every person has experienced cryptomnesia and believed any source we encountered or heard and forget about it and after some time believed that it is our own original concept or idea. Jacob is also suffering from cryptomnesia here.