Guardrails for Amazon Bedrock is the correct choice because it lets WillowWorks Edu define and enforce safety policies, word and topic filters, and contextual rules that proactively restrict model outputs so the generated stories remain age appropriate.

The guardrails capability integrates with Bedrock models to apply policy constraints at generation time. This lets the team codify age restrictions and block harmful themes before they appear in a story while still allowing creative narrative generation.

Amazon Rekognition focuses on image and video analysis with moderation labels and it does not provide enforcement controls for text produced by language models so it is not suitable for this LLM safety requirement.

Agents for Amazon Bedrock helps orchestrate tools and automate workflows but it does not itself govern or enforce content safety rules for model outputs so it does not meet the requirement.

Amazon Bedrock playgrounds are for prototyping prompts and experimenting with models and they do not add policy enforcement to guarantee age appropriate outputs so they are not the right solution.

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