The ______ party was boring, but impulsive Sarah did her best to lives it up with her trademark _____?

The __ party was boring, but impulsive Sarah did her best to lives it up with her trademark _?

Intriguing ... Tact

Monotonous ... Solitude

Fascinating ... Recklessness

Mundane ... Spontaneous

The Mundane party was boring, but impulsive Sarah did her best to lives it up with her trademark Spontaneous.

The sentence describes a dull party where Sarah tries to liven things up with her spontaneous nature.

"Mundane" means dull or ordinary, and "spontaneous" refers to acting on impulse.