Which of the following is NOT an acceptable form of ID for visitors?

The correct answer is that a library card is not an acceptable form of ID for visitors. This is primarily because a library card does not serve as a reliable form of identification that verifies a person's identity or status when accessing secure facilities, such as jails or correctional institutions.

Acceptable forms of ID typically include government-issued identification that includes a photo and relevant personal information, such as an ID card, military ID, or official passport. These types of identification are recognized by authorities for ensuring security and verifying the identity of individuals entering controlled environments. In contrast, a library card is intended for borrowing books and does not provide sufficient personal identification for security purposes.