Here are Google's definitions of "fluting".
noun
<span>1. sound reminiscent of that of a flute.
"the silvery fluting of a blackbird"
2. a groove or set of grooves forming a surface decoration.
"a hollow stem with vertical flutings"
</span>adjective
1 .reminiscent of the sound of a flute."the golden, fluting voice filled the room"
<span>Gulliver destroys the emperor’s throne room.
</span>
Answer: passive
Explanation: The subject or who is performing the action is not clear and in an active sentence, there is importance placed on the person who is performing the action.
<span>Gerund Phrase: skiing in Switzerland
Noun Use: object of the preposition</span>