A user asks an open-ended product FAQ question. The engineer has already connected a search extension (Elasticsearch-backed knowledge base) to the assistant. Which response type should be added to the action step so the assistant returns grounded answers from that knowledge base?

The Search results response type in watsonx Assistant invokes the connected search extension (e.g., Watson Discovery, Elasticsearch, or a custom extension) and surfaces ranked results with titles, excerpts, and links. This keeps answers current without manual authoring. A hardcoded option list or text table requires constant manual maintenance and cannot scale to large knowledge bases. The correct answer, "A search results response that queries the configured search extension and returns ranked result cards", directly satisfies the scenario because it aligns with watsonx Assistant's design principles and the specific capability being tested. The incorrect options ("An option list response with hardcoded FAQ items authored directly in the action", "An image response that embeds screenshots of relevant knowledge base articles", "A plain text response with a manually maintained Q&A lookup table inside the step") may appear relevant but each misses a key requirement or introduces a step that is either unnecessary or belongs to a different workflow. Mastering the distinction between these approaches is essential for effective watsonx Assistant implementations and is a core focus of the Domain 1: Build Conversational Flows section of the certification exam.