Answer:
Prepositional Phrases:
1) to the hospital 
2) at this restaurant 
3) about vocabulary
Prepositions:
1) to
2) at
3) about
Explanation:
A preposition is a part of speech in English Language that refers to a word of set of words that show the relationship between a noun and other words in a sentence. It also used to connect objects, people, time, location and directions. Examples include: in, at, with etc.
A prepositional phrase is one that is made up of a preposition, a modifier and its object. A prepositional phrase cannot stand alone and often tells when or where something happened.
That is why the the prepositional phrases and prepositions are:
Prepositional Phrases:
1) to the hospital
2) at this restaurant
3) about vocabulary
Prepositions:
1) to
2) at
3) about
 
        
             
        
        
        
C.that huge tree on maple street is not a maple tree.
        
             
        
        
        
Theseue should be the correct answer.