What is required of drivers regarding the attachment of license plates?

Answer: B — They must be firmly attached

To ensure compliance with vehicle laws and regulations, drivers are required to have their license plates firmly attached to the vehicle. This requirement is crucial for a number of reasons. First, a securely fastened license plate prevents it from becoming detached while the vehicle is in motion, which can pose a risk to other drivers and create legal issues for the vehicle owner. Additionally, a properly affixed plate is essential for identification purposes, as law enforcement and other authorities rely on visible and stable license plates to track vehicle registrations and enforce traffic laws. The option regarding the use of stickers is unsuitable as stickers are not a standard method for securing license plates and may not last under various weather conditions. Allowing any type of attachment could lead to inconsistent practices, resulting in poorly secured plates and complicating enforcement. Stating that only front plates need to be fastened overlooks the requirement for both front and rear plates (if applicable) to be secured. Thus, firmly attaching license plates ensures that they meet legal standards and are safe for road use.