Is the following underlined group of words an adverb clause or an adverb phrase? “We could not leave the house until the storm had passed.”

Responses
A adverb clauseadverb clause
B adverb phrase

The underlined group of words "until the storm had passed" is an adverb clause. This clause provides information about when "We could not leave the house" and includes a subject ("the storm") and a verb ("had passed"), which are necessary components of a clause.

So the correct response is:

A adverb clause