Final answer:
The step in communication when a listener asks a question is called the Inquiry Phase, marking the onset of a dialectical interaction and facilitating deeper understanding.
Step-by-step explanation:
When a listener asks a question in a conversation or discussion, this step in communication is best described as the Inquiry Phase. This phase signifies the beginning of dialectical interaction where one party seeks information or clarification from another, often leading to a deeper understanding of the topic at hand. This stage is a fundamental part of both casual conversations and formal research processes, encouraging a dynamic exchange of ideas and contributing to the advancement of knowledge.