Answer:
object = store
prepositional phrase = of the store
Explanation:
object: a noun or noun phrase governed by an active transitive verb or by a preposition.
prepositional phrase: a modifying phrase consisting of a preposition and its object.
In the sentence "of" is a preposition; the entire prepositional phrase is "of the store." The "store" is the object since it is governed by the preposition "of."
