The requirements are:

Generate tags for uploaded images → This is an image analysis task.

Tags must be returned in the user’s preferred language → Must support localization of tags.

Languages required: English, French, and Spanish → Must support multiple languages.

Minimize development effort → Should use a prebuilt service rather than training a custom model.

Option Analysis:

A. Custom Vision image classification

Custom Vision requires training a model with your own dataset.

It outputs classification labels, but these are defined in English by the developer, and localization would require extra translation work.

More development effort, not ideal here.

B. Content Moderator Image Moderation

Used to detect adult/racy content, profanity, or unsafe imagery.

Does not generate descriptive image tags.

Not suitable.

C. Custom Translator

Used to train translation models for text.

Does not analyze or generate image tags.

Not applicable here.

D. Computer Vision Image Analysis

Provides prebuilt image tagging and description features.

Automatically generates descriptive tags for uploaded images.

Supports multiple languages (including English, French, and Spanish) for returning tags and descriptions.

Minimal development effort: simply call the Image Analysis API with the desired language parameter.

This exactly meets the requirements.

Correct Answer: D. Computer Vision Image Analysis

Azure AI Vision Image Analysis – Tags and Descriptions

Azure AI Vision supported languages

Quickstart: Analyze an image with the Computer Vision REST API

Microsoft References