Short-term or daily rental truck drivers often pose a hazard because:

Drivers of short-term or daily rental trucks often pose a hazard primarily because they are not accustomed to the limited visibility associated with larger vehicles. For drivers who typically operate smaller vehicles, transitioning to a truck can present significant challenges due to its size and dimensions. This unfamiliarity can lead to difficulty in judging distances, assessing blind spots, and navigating turns, particularly in urban areas or tight spaces.

Since these drivers may lack the experience with the characteristics and handling of a larger vehicle, they might not be as vigilant about their surroundings, thereby increasing the risk of accidents. The other factors mentioned in the choices do not directly relate to the specific challenges faced by rental truck drivers, such as driving experience or awareness of vehicle size.