Amazon Rekognition is AWS's service for image and video analysis that can identify objects, people, text, scenes, and activities in visual content. It includes features for detecting inappropriate content (such as explicit or suggestive content) through its Content Moderation API, making it the correct choice for identifying activities and detecting inappropriate content in images and videos.

• Amazon Comprehend: Natural language processing service for text analysis
• Amazon QuickSight: Business intelligence and data visualization service
• Amazon Personalize: Machine learning service for creating personalized recommendations