Which AWS service provides access to foundation models that developers can use to build and scale generative AI applications?

Amazon Bedrock is the correct answer because it is a fully managed service that provides access to a choice of high-performing foundation models (FMs) from Amazon and leading AI startups through a single API. This allows developers to easily build and scale generative AI applications. Amazon Q Developer is an AI-powered assistant designed to help developers with tasks like code generation and debugging, but it doesn't provide access to FMs for building new applications. Amazon Kendra is an intelligent search service that uses machine learning to deliver highly accurate search results, not a platform for generative AI model access. Amazon Comprehend is a natural language processing (NLP) service that uncovers insights and relationships in text, but it's for analyzing existing text, not for building generative AI applications with FMs.