Final answer:
Human behavior is attributed to over 90% of vehicular collisions due to driver error and risky behaviors.
Step-by-step explanation:
The student asked about the percentage of collisions that can be attributed to human behavior. According to various studies, including those from organizations like the American Automobile Association, human behavior is responsible for a significant portion of traffic accidents. Specifically, driver error plays a major role. Though the question options are not directly supported by the referenced AAA statistic, based on general safety statistics, human behavior is often cited as contributing fully or partially to over 90% of vehicular collisions. This is due to factors such as inattention, speeding, driving under the influence, and other risky behaviors.