Respuesta :

"Ballroom dancing" and "the tango" are noun phrases that rename "two kinds of performance art" and so they are appositive phrases.  

Participle phrase example: *Sleeping soundly,* I dreamed of Italy.  

Infinitive phrase example: I have decided *to go back to Italy.*  

Verb phrase example: I *have decided* to go back to Italy.

definitely appositive phrase.

RELAXING NOICE
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