Answer:
It, That, This
Explanation:
<u>It </u>is small and round - talking about something.
<u>That </u>is small and round - pointing at something someone is holding or you can see.
<u>This</u> is small and round - pointing/talking about something you are holding or gesturing towards.
Those who move slower and take their time can usually avoid error. Those who move quickly mess things up and can literally “fall.”
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.