Identify the sentence with correct use of the infinitive as an adverb:
A. She went to the store to buy some groceries.
B. She went to the store buying some groceries.
C. She went to the store buy some groceries.
D. She went to the store buys some groceries.
The correct form is "She went to the store to buy some groceries," using the infinitive "to buy" as an adverb indicating purpose.