Answer:
A. The door slammed shut because the wind will be blowing.
Explanation:
The correct way to say that would be <em>The door slammed shut because the wind was blowing</em>
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.
It would be A hope this helps
Is pollution harmful to the animals of the earth?