I believe it is She knows that he has made the only decision that will satisfy his soul but im not completely positive.
The participle phrase in the above sentence is 'Enjoying her new flute.'
<em>The participle phrase</em> starts either with the present (dependably ending with -ing) or past (dependably ending with -ed)
The participle phrase includes the modifiers or objects to complete the thought of the sentence. For instance, in the above sentence 'enjoying' is in present and modifies the word 'new flute'. Therefore, the participle phrase acts as an adjective always, providing a description of the sentence,
Lack of water bc you get dehydrated when you are too hot