Final answer:
To make the sentence 'Going to the store' a complete sentence, option 2 'to get bread' should be chosen. The sentence 'Going to the store to get bread' contains a subject ('I' implied) and a verb ('going') that make it a complete sentence.
Step-by-step explanation:
To make the sentence 'Going to the store' a complete sentence, option 2 'to get bread' should be chosen. The sentence 'Going to the store to get bread' contains a subject ('I' implied) and a verb ('going') that make it a complete sentence.