It's B dude. A. isn't right and b just seems the most reasonable.
Answer:
if you are look ing for cause and effect this is for you
Explanation:
the car was in a reck and that is the cause the effect is the officer came to the car to make sure no one was hurt
An infinitive is the word "to" plus a verb so if you see that in a sentence its probably an.infinitive (I'll give an example below)
Ex: Renee suprised her sister to scare her.
-The infinitive would be "to scare" because it could be mistaken as a verb but the actual verb is "surprised"
Hope that helped!