In the sentence "The supermarket down the street moved to the south end of the city," the adjectival phrase modifies "supermarket," telling us which supermarket you're referring to (the one down the street). The adverbial phrase provides information about where the supermarket moved (to the south end of the city).
Looking at the options:
- Adjectival Phrase: "down the street"
- Adverbial Phrase: "to the south end"
Thus, the correct answer is:
C) down the street; to the south end