You did not include the other part of the question but with some googling i think this answer is what you were looking for:
"to the grocery store" modifies drive. Because drive is a verb, that makes "to the grocery store" an adverb phrase.
Answer:
D. because
Explanation:
Because is an example of a subordinating conjunction! (links dependent to independent clause)
Requiring!
Given the context of the sentence, requiring would be the best meaning.
hope it's passable
