Which statement is true regarding track assignment?

The correct answer highlights the importance of track assignment in relation to track quality (TQ). In joint operational environments, particularly in the context of Link-16 communications, the quality of each track is a critical factor in determining how track numbers (TNs) are assigned. Tracks that demonstrate higher quality and reliability are prioritized when it comes to TN assignment, ensuring that the most accurate and actionable data is being communicated among military platforms. This focus on TQ facilitates better situational awareness and more effective decision-making among combat units.

The other choices provide insights into different aspects of track and communication management but do not accurately define the basis on which track numbers are primarily assigned, which revolves around quality rather than simply the allocation process or order of numbering. Understanding this emphasizes the operational value of maintaining high track quality in data sharing and joint operations.