The capability to export classifiers is offered in the Custom Vision Service. You may use this feature in your application locally for real-time classifications. Since Custom Vision Service only exports compact domains, you plan to convert standard domain to compact domain to run the classifier locally for real-time classification. 
Review the scenario given above and select the answer choice where the sequence of steps to convert standard to a custom domain iscorrectly maintained:

Answer options:

A.Select & save the new domain -> Retrain the model -> Select the project -> Export the model 
B.Select the project -> Select & save the new domain -> Export the model -> Retrain the model
C.Select & save the new domain -> Select the project -> Export the model -> Retrain the model
D.Select the project -> Select & save the new domain -> Retrain the model ->Export the model

Correct Answer: D
Option A is incorrect because you would need to select the project first and change it to the compact domain. The next step would be to retain the model and export it in the appropriate format. 
Option B is incorrect because you would need to retain the model before exporting it in the appropriate format.
Option C is incorrect because you would need to select the project first and change it to the compact domain. The next step would be to retain the model and export it in the appropriate format.
Option D is correct because following this sequence, you can export the model to execute locally for real-time classification.
Reference: 
To learn more about Custom Vision Service export options, use the link given below: 

https://docs.microsoft.com/en-us/azure/cognitive-services/custom-vision-service/export-your-model