Answer:
The correct answer is until/subordinating
Step-by-step explanation:
Coordinating Conjunctions and Correlative Conjunctions
A conjunction joins words or groups of words in a sentence.
1. Coordinating Conjunctions: connect words, phrases, or clauses that are independent or equal
Examples: and, but, or, so, for, yet, and not
2. Correlative Conjunctions: used in pairs
Examples: both/and, either/or, neither/nor, not only/but also
3. Subordinating Conjunctions: used at the beginning of subordinate clauses
Examples: although, after, before, because, how, if, once, since, so that, until, unless, when, while, where, whether, etc.