Answer: Amazon Comprehend

Amazon Comprehend is the correct AWS service for sentiment analysis. It is a natural language processing (NLP) service that uses machine learning to find insights and relationships in text, including sentiment detection (positive, negative, neutral, or mixed). **Why other options are incorrect:** - **Amazon Rekognition**: This service is for image and video analysis, not text sentiment analysis. - **Amazon Transcribe**: This service converts speech to text, but doesn't analyze sentiment in the transcribed text. - **Amazon Translate**: This service translates text between languages, but doesn't perform sentiment analysis. **Key Features of Amazon Comprehend:** - Sentiment analysis (positive, negative, neutral, mixed) - Entity recognition (people, places, brands, etc.) - Key phrase extraction - Language detection - Syntax analysis - Topic modeling

Author: Ritesh Yadav