A question used to promote thinking and asked of the entire group with no person designated to answer is a/an:

The correct answer is the term that describes a question aimed at fostering discussion and encouraging engagement from the entire group without directing it to any specific individual. This approach helps stimulate critical thinking and active participation among all attendees. By posing this type of question, the educator invites everyone to contribute their ideas or perspectives, thereby creating a dynamic learning environment.

Utilizing this technique can enhance group interaction, as it encourages participants to reflect on the topic at hand and consider various viewpoints. When the question isn't targeted at any particular individual, it allows for a broader range of input and can lead to more enriched discussions.

In comparison, other types of questions serve different purposes; for instance, a direct question typically seeks a specific answer from one individual, which does not promote the same level of group engagement. An oral question may be asked verbally but doesn't inherently imply the target audience's participation across the board. A relay question usually involves asking one person to continue the discussion or provide an answer, which contrasts with the open-ended nature of the correct term.