Final answer:
The quote is from 'The Giver' by Lois Lowry, and it's a reflection on the certainty of one's future societal role in the book's dystopian setting.
Step-by-step explanation:
The passage To tell the truth, though, Jonas informed me that your Ceremony lacked the suspenseful factor. Because I was already fairly certain of what my Assignment was to be." is from the book 'The Giver' by Lois Lowry. This piece of dialogue is spoken by a character reflecting on the predictability of their future role in the community, contrasting it with another's experience of uncertainty during a ceremonial assignment of roles.
'The Giver' explores themes of conformity, control, and the trade-off between individuality and security in a dystopian society.