The question is about creating an Azure Cognitive Services resource programmatically with C#.
Key requirements from the question:
Free resource → This requires the F0 (Free) pricing tier.
West US region → Location should be " westus " .
Generate captions of images automatically → This requires the Computer Vision service.
Option Analysis
A. create_resource(client, " res1 " , " ComputerVision " , " F0 " , " westus " )
Uses " ComputerVision " kind → Correct, because Computer Vision provides the image captioning feature.
Tier is " F0 " → Correct, free tier.
Location " westus " → Correct.
This is the correct answer.
B. create_resource(client, " res1 " , " CustomVision.Prediction " , " F0 " , " westus " )
Custom Vision is for building and deploying custom image classifiers.
The Prediction resource is specifically for running inference, not general captioning.
Wrong service for the requirement.
C. create_resource(client, " res1 " , " ComputerVision " , " S0 " , " westus " )
" ComputerVision " is correct.
But " S0 " is a paid tier, not the required free tier.
Does not meet the requirement.
D. create_resource(client, " res1 " , " CustomVision.Prediction " , " S0 " , " westus " )
Wrong service (captioning is not handled by Custom Vision).
Wrong tier (paid instead of free).
Incorrect.
Correct Answer: A. create_resource(client, " res1 " , " ComputerVision " , " F0 " , " westus " )
Microsoft References
Azure AI Computer Vision documentation
Create a Cognitive Services resource in Azure
Computer Vision capabilities – Image analysis and captioning
