Answer:
Assembly
This is a good word to replace Array. It means gathering. If you want to look for more words to replace Array, look at a Theasurus.
I would say shame, since the line says "repentance", which means to express that you are sorry for something. You would do this usually if your are ashamed of something you did and want to apologize.
The correct preposition that you should add to make the sentence correct is TO. The answer is then "To facilitate a quick getaway, the cunning thief parked the car perpendicular to the building". Perpendicular things always have the preposition TO next to them.
<span>She has made physical advances toward Lancelot.</span>
