Read the quotation from thomas jefferson, then answer the question.
[the question of slavery], like a fire bell in the night, awakened and filled me with terror. i considered it at once as the [death] knell of the union. thomas jefferson, 1820 vocabulary support death knell: a sign that something is coming to an end
What fills Jefferson with terror?
A) Waking up at night
B) The sound of a fire alarm
C) The debate over slavery
D) None of the above