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Practicing pair programming is a widely recognized practice in Agile methodologies that enhances team collaboration significantly. In pair programming, two developers work together at one workstation; one writes the code while the other reviews each line as it is written. This close collaboration fosters a shared understanding of the codebase, encourages knowledge sharing, and allows for real-time feedback, which ultimately leads to improved quality and faster problem resolution.

The practice of pair programming also helps solidify team dynamics by promoting communication and teamwork. This hands-on approach can break down silos between team members, as they must continuously engage with one another, discussing their thought processes and decisions. This support for collective problem-solving and shared responsibility increases team cohesion and enhances overall performance.

On the other hand, encouraging competition, having a single lead make all decisions, and scheduling infrequent meetings tend to create barriers to collaboration. Competition among team members can lead to mistrust and reduce openness, a crucial aspect of Agile environments. Centralizing decision-making in one person can stifle team input and reduce engagement. Finally, scheduling infrequent meetings can prevent the necessary communication from occurring, leading to misunderstandings and disconnection among team members. Therefore, practicing pair programming stands out as the best method to enhance collaboration in Agile settings.