What meaning does the suffix -ence give to the word decadence?

Question

Mark Twain was so disgusted with the social and political decadence of the late 1800s that he called that period "the Gilded Age"
Case of decay
Fear of decay
Onset of decay
State of decay

Pick one of the four

Answer 1

The meaning that the suffix -ence gives to the word "decadence" is the state of decay.