Question: What triggers a UE capable of providing SRS resource for positioning and UE Tx TEG ID association information to initiate the procedure?
Option 1: Receipt of a specific RRC message from the eNodeB.
Option 2: Configuration by the network to provide this association information.
Option 3: Periodic timer expiration in the UE.
Option 4: Handover from one cell to another.
Explanation: According to the specification, a UE capable of providing SRS resource for positioning and UE Tx TEG ID association information initiates the procedure upon being configured by the network to provide this association information. This indicates that the configuration is the trigger for the UE to initiate the procedure.