Answer:
Adverb phrase ( to renovate her old and dingy bathroom)
Explanation:
Adverb (adverbial) phrase is a group of words that has a function of an adverb in a sentence. It can modify noun, adjective, adverb, clause or even the whole sentence. Adverb phrases answer questions like why, when, how something happened.
In the given sentence this adverb phrase tells us why Julia withdrew money from each paycheck ⇒ to renovate her old and dingy bathroom.
Its subtype is adverbial infinitive phrase because infinitive phrase to renovate her old and dingy bathroom modifies the verb withdrew.
