A) A prepositional phrase consists of a preposition, an object and a word that modifies the object. A prepositional phrase can act as an adverbial phrase or an adjectival phrase. When it acts as an adverbial phrase, it modifies the verb in the sentence. When it acts as an adjectival phrase, it modifies the noun in a sentence.
B) "More vigorously than Nico" - The phrase tells us how the canoe was paddled. "Vigorously" is an adverb that qualifies the verb "paddled".
C) Comparative adverbial phrase compares the actions between two objects, people or things, Example: David runs faster than Chris.
