A primary concern when a LAN administrator has programming responsibilities is?

The correct choice highlights a significant risk associated with a LAN administrator handling both network administration and programming tasks. When a LAN administrator takes on programming responsibilities, there is an increased likelihood that changes made to the system through programming can compromise system security and bypass established change controls.

This is particularly important because programming often involves modifying system configurations or developing new functionalities that may not be adequately tested or monitored for security vulnerabilities. Inadequate change controls might result in unauthorized access, data breaches, or the introduction of malware, significantly endangering the integrity and confidentiality of the network.

Furthermore, programming can require elevated privileges that, if mismanaged, could lead to unintended consequences such as exposure to security threats or conflicts with existing controls and protocols. Therefore, focusing on the possibility that programming responsibilities might undermine established security measures and controls underscores why this choice is seen as the primary concern.