What is a significant consequence of having an unauthorized program change in a library?

Having an unauthorized program change in a library can lead to data integrity issues, which is a significant consequence. Data integrity refers to the accuracy, consistency, and reliability of data stored within a system. When a program is changed without proper authorization and testing, it can introduce errors or bugs that compromise the data's quality. This could lead to inaccurate reporting, loss of data, or corruption of existing data, undermining trust in the information system.

The integrity of data is critical, especially in environments where data is used for decision-making, regulatory compliance, or business operations. Unauthorized changes can bypass established controls and checks designed to maintain data quality, resulting in potentially severe repercussions for the organization, such as financial loss, legal consequences, and damage to reputation.

In contrast to the negative outcomes associated with unauthorized changes, the other options suggest improvements in areas like accessibility, operational efficiency, and user satisfaction, which are typically dependent on authorized and well-managed program changes rather than unauthorized alterations that can lead to chaos and inconsistencies.