A customer wants to enable the Real Time Transcription (RTT) feature only for specific queues.

Option C is correct because it checks membership by comparing the selected queue_ID string to the id value in each dictionary in the queue_IDs list. The input structure says queue_ID is a string and queue_IDs is a list of dictionaries, with each dictionary containing an id key. A direct expression like agent_Queue in queue_List fails because it compares a string to whole dictionary objects, not to their id values. A loop that sets rtt_Enabled to False inside the else branch can also produce wrong results because a nonmatching later dictionary can overwrite a previous match. The Python any() expression is the cleanest correct logic: it returns True if at least one dictionary has an id equal to the selected queue. The function then writes rtt_Enabled into response.data for the flow to consume before deciding whether to start the media stream. Reference: Cisco Help, Build and manage flows with Flow Designer; Flow Designer function runtime documentation.