Knowledge management is best described as:

Knowledge management is best described as implementing systems and practices to enhance the sharing of knowledge because it emphasizes the importance of facilitating communication and collaboration within an organization. This process involves strategies and tools that allow employees to share insights, expertise, and information effectively, thus leveraging the organization's collective intelligence.

Successful knowledge management helps streamline operations, improve decision-making, and foster innovation by enabling individuals to access the right information at the right time. It involves creating a culture that supports knowledge sharing, which can lead to enhanced productivity and overall organizational performance.

Other options do not align with the concept of knowledge management. Limiting information flow contradicts the essence of knowledge sharing. Collecting data without analysis does not contribute to meaningful knowledge creation or utilization. Similarly, maintaining unused information does not serve a purpose in facilitating knowledge transfer or enhancing organizational effectiveness.