Final answer:
The word 'to' will add a prepositional phrase to the sentence, completing it as 'the cunning thief parked the car perpendicular to the building.' The preposition 'to' is appropriate as it accurately indicates the relationship between the car's position and the building.
Step-by-step explanation:
The question asks which word will add a prepositional phrase to the sentence: "the cunning thief parked the car perpendicular (from, on, to, with) the building." Prepositional phrases provide additional information in a sentence, often indicating location, direction, or time, and typically begin with a preposition.
In this case, the correct preposition to construct a prepositional phrase that makes sense is "to." This leads to a complete and logical sentence: "the cunning thief parked the car perpendicular to the building," indicating the orientation of the car relative to the building.
When inserting a prepositional phrase into a sentence, it is important to choose a preposition that correctly conveys the relationship between the noun and the rest of the sentence. Prepositions like "from," "on," and "with" do not provide the correct relationship in this context. Therefore, the mention of the correct option answer in the final answer is "to," as it properly completes the prepositional phrase.