Answer: To detect emotions and entities in text using NLP

Amazon Comprehend is a natural language processing (NLP) service that uses machine learning to find insights and relationships in text. Its primary functions include: - **Sentiment analysis**: Detecting positive, negative, neutral, or mixed sentiment - **Entity recognition**: Identifying people, places, brands, dates, quantities, etc. - **Key phrase extraction**: Extracting important phrases - **Language detection**: Determining the language of the text - **Syntax analysis**: Identifying parts of speech - **Topic modeling**: Grouping documents by topics Option A is correct because it accurately describes Amazon Comprehend's core functionality of detecting emotions (sentiment analysis) and entities (entity recognition) in text using NLP. Other options describe different AWS services: - Option B describes Amazon Textract (extracts text from images and documents) - Option C describes Amazon Polly (text-to-speech service) - Option D describes Amazon SageMaker or other ML services that create embeddings

Author: Ritesh Yadav