Answer:
A) St. Augustine FL
Step-by-step explanation:
The appositive phrase from the given sentences is the "option A" which is St. Augustine FL. This is because this sentence qualifies the definition of the appositive phrase which is essentially the identification of the noun or the preceding pronoun. It makes the meaning very clear and precise and gives the reader the set of the necessary information. Moreover, the noun phrases are placed side by side where the single element serves another for better identification and meaning.