A. Correct.
Regression predicts a numeric value, such as minutes late, price, temperature, or demand.

B. Incorrect.
Clustering groups similar records without predefined labels. It does not predict a continuous numeric value.

C. Incorrect.
Object detection identifies and locates objects in images, which is unrelated to predicting flight delay minutes.

D. Incorrect.
Key phrase extraction identifies important phrases in text and is a natural language processing task.

A. Incorrect.
Binary classification predicts one of two known labels, such as yes or no. The customer groups are not predefined here.

B. Incorrect.
Regression predicts numeric values, not customer segments.

C. Correct.
Clustering is unsupervised learning that finds natural groups in data without existing labels.

D. Incorrect.
Anomaly detection finds unusual records or events; it is not the primary method for general customer segmentation.

A. Incorrect.
Regression predicts a number. This scenario predicts a category.

B. Correct.
Classification predicts discrete labels, and a yes/no outcome is binary classification.

C. Incorrect.
Clustering groups similar data points without predefined outcomes. Here the possible outcomes are known.

D. Incorrect.
Text summarization condenses text and does not predict whether a student completes a course.

A. Incorrect.
Document Intelligence extracts structured data from forms and documents; it is not the main FAQ knowledge base feature.

B. Incorrect.
Azure AI Vision analyzes images and video, not FAQ text answers.

C. Incorrect.
Azure Machine Learning designer builds ML pipelines but is not the fastest service for FAQ question answering.

D. Correct.
Question answering in Azure AI Language can create a knowledge base from FAQ content and return answers to natural language questions.

A. Incorrect.
Azure AI Speech converts speech to text, text to speech, and supports speech translation. It does not extract invoice fields.

B. Correct.
Azure AI Document Intelligence extracts fields, tables, key-value pairs, and structured information from forms and documents.

C. Incorrect.
Azure AI Translator translates text between languages but does not parse invoice structure.

D. Incorrect.
Azure OpenAI Service can reason over text, but Document Intelligence is the purpose-built service for structured document extraction.

A. Incorrect.
Named entity recognition identifies entities such as people, locations, dates, and organizations.

B. Incorrect.
Optical character recognition extracts printed or handwritten text from images.

C. Correct.
Sentiment analysis evaluates text and returns sentiment such as positive, negative, neutral, or mixed.

D. Incorrect.
Speaker recognition identifies or verifies speakers from voice audio, not sentiment in text.

A. Incorrect.
Speech synthesis turns text into spoken audio.

B. Incorrect.
Text translation converts text from one language to another after the text is available.

C. Incorrect.
Clustering groups data points; it does not read text from images.

D. Correct.
Optical character recognition, or OCR, detects and extracts text from images and scanned documents.

A. Correct.
Fairness is the responsible AI principle focused on avoiding unfair bias and ensuring equitable treatment.

B. Incorrect.
Latency is a performance measure and not a responsible AI principle.

C. Incorrect.
Data compression reduces storage or transfer size and does not address bias.

D. Incorrect.
Batch scoring is a model inference pattern, not a fairness principle.

A. Incorrect.
Azure AI Vision analyzes images and video frames, not spoken audio.

B. Correct.
Azure AI Speech supports speech-to-text transcription for audio.

C. Incorrect.
Azure AI Search can index transcripts after they exist, but it does not transcribe audio by itself.

D. Incorrect.
Custom Vision trains image classification or object detection models, not speech transcription.

A. Incorrect.
Azure Load Balancer distributes network traffic and does not generate natural language.

B. Incorrect.
Document Intelligence extracts structured data from documents. It is not the primary service for generating product descriptions from prompts.

C. Correct.
Azure OpenAI Service provides access to generative models that can draft, summarize, transform, and reason over text when prompted.

D. Incorrect.
Azure DDoS Protection protects network resources from denial-of-service attacks and is unrelated to text generation.