the word selected
Step-by-step explanation:
As it is opined in the paragraph at first, that Jonas is announced to have been selected, not assigned as the next Receiver of memory. This reveals a certain amount of acquaintance could be possible between the three characters.
The rest of the options serve to build the mood of passage while the word 'selected' is doubled down on, right after it is mentioned making it look important to the eyes of the reader too.