Final answer:
The words in the parentheses are an example of an adverb dependent clause.
Step-by-step explanation:
The words in the parentheses in the sentence 'Because my dog loves pizza crusts, (I always save them for him).' are an example of an adverb dependent clause. Dependent clauses rely on independent clauses to complete their meaning and typically begin with subordinating conjunctions like 'because'. In this case, the dependent clause 'I always save them for him' provides additional information about the action or reason mentioned in the independent clause.