Final answer:
The prepositional phrase in the sentence is 'like a busy beehive'. This phrase begins with 'like', a preposition, and ends with 'a busy beehive', which is the object of the preposition, together forming the prepositional phrase.
Step-by-step explanation:
The prepositional phrase in the sentence "The overcrowded town square buzzed like a busy beehive" is 'like a busy beehive'. Prepositional phrases often begin with a preposition and end with a noun or pronoun, called the object of the preposition. In this case, 'like' serves as the preposition, and 'a busy beehive' is the noun phrase that completes the prepositional phrase, which here is being used to draw a comparison to the town square's level of activity. Such comparisons are common in English to create vivid imagery or to explain concepts more clearly.
Looking at the review questions provided as reference, these types of structures often include a subject, followed by a linking verb, and then a subject complement that can include a noun phrase or adjective. These constructs are a critical part of understanding English grammar and are useful in identifying parts of a sentence.