In order to avoid conflicts when traffic is heavy in the right lane, you should use the:

Using the center lane is advantageous in heavy traffic situations because it typically provides a buffer from the often slower-moving vehicles in the right lane, where merging and turning often occur. This lane allows you to maintain a smoother flow of traffic while reducing the likelihood of conflicts with vehicles entering or exiting the roadway. It provides a tactical advantage in navigating through congested areas without becoming too close to the edges where unexpected stops or changes can happen.

The left lane, while also a possible consideration, is often used for faster-moving traffic or overtaking vehicles, which can lead to more aggressive driving behavior. The right lane is not ideal during heavy traffic due to frequent lane changes and slower speeds, making it a less safe choice. Using the emergency lane is not a safe option under normal driving conditions, as it is intended for emergencies and could result in legal consequences or accidents. Therefore, the center lane is the most strategic choice for avoiding conflicts in heavy traffic.