Which option reflects an important role librarians play in promoting digital literacy among students?

Librarians play a vital role in promoting digital literacy by instructing students on how to access online databases and resources. This instruction helps students develop essential skills in navigating the vast digital landscape, including how to evaluate sources for credibility, discern reliable information from misinformation, and utilize various tools for research purposes.

By guiding students in using online databases, librarians equip them with the knowledge necessary to conduct effective research, enhancing their academic skills and supporting their learning objectives. This empowerment through understanding resources is fundamental to fostering independent and informed learners, which is a core component of digital literacy.

The other options do not align with the main objectives of promoting digital literacy in the same way. While teaching students how to repair computers could be helpful, it does not directly contribute to their ability to find and critically assess information. Monitoring usage of technology during class might ensure responsible use, but it doesn't enhance students’ skills in utilizing digital resources. Limiting access to online information runs counter to the ethos of a library, which aims to provide access to a wide range of resources and promote critical engagement with information.