According to Nietzsche in "The Thought of 'Eternal Recurrence,'" what question would gain possession of you after you were visited by the demon?

Nietzsche

A German philosopher, cultural critic, and poet, known for his concepts of the Übermensch, the will to power, and the eternal recurrence.

Eternal Recurrence

The concept, most notably discussed by Nietzsche, that the universe and all existence and energy have been recurring, and will continue to recur, in a self-similar form an infinite number of times across infinite time or space.