Context: I still do n't know what was causing the massive failure because I saw no wrecked cars . I can only assume the cluster arose from several semi trucks all huddled together . Once we made it past that , we still had to drive to the exit and park .
Question: What was causing the delay ?
Option 0: A roadblock
Option 1: A crash
Option 2: A group of semi trucks
Option 3: None of the above choices .
Answer: 2