Final Answer:
You are creating a user action naming rule and you want to show the "trip id" followed by the ID number. Therefore the correct option is d) Refine the rule to extract only the numeric value after "trip_id".
Step-by-step explanation:
To display only "trip_id161" or "trip_id1920" as the user action name, the rule needs to be refined to extract only the numeric value after "trip_id." This involves modifying the rule to capture and display the specific numerical identifier associated with each "trip_id." This ensures that the user action name reflects the intended information, excluding unnecessary characters and parameters.
Adjusting the rule to capture "trip_id" before any "&" character (option a) or changing the rule to exclude "&success" from the user action name (option b) may not address the specific requirement of showing only the numeric value after "trip_id." Similarly, modifying the rule to ignore any numbers following "trip_id" (option c) might result in incomplete user action names. Therefore, refining the rule to extract only the numeric value after "trip_id" (option d) is the most appropriate choice for achieving the desired user action naming convention.
In summary, the answer "d) Refine the rule to extract only the numeric value after 'trip_id'" ensures that the user action names accurately represent the trip identifier by excluding extraneous characters and parameters, aligning with the specified naming convention.