What should you do when passing a truck?

Answer: A — Always pass completely and on the left side

When passing a truck, it is important to remember that trucks have large blind spots. To ensure safety, always pass trucks completely and on the left side. Passing on the left allows the truck driver a better chance of seeing you in their mirrors, reducing the risk of a collision. Passing slowly can increase the time spent in the truck's blind spot, making it less safe. Additionally, lingering alongside a truck is dangerous due to limited visibility on the truck driver's part. Therefore, the correct answer is to always pass completely and on the left side when passing a truck.