Disclaimer: While this question can relate to any language, there may be common interpretations specific to the English language.
We have two people (denoted A or B).
Say Person A poses a question, perhaps, "How did you find us?" (in reference to a Hide and Seek game). Now Person B responds "Well, I did see a ribbon on the ground that I know belongs to you. Wouldn't you think that indicates something?"
I am focusing on the latter part of Person B's response, "Wouldn't you think that indicates something?" Obviously, the answer is yes. The ribbon that belongs to Person A would indicate that Person A has near the spot of the ribbon.
However, I am unsure of whether that question Person B posed should be considered as a question to emphasize the point of Person B's response (the point that the ribbon was the reason Person B was able to find Person A) or a question breaking down the response into more understandable terms (by making the reasons on why Person B found Person A more obvious), which then assumes the unintellegence of a person (which can be considered rude).
Now, bringing this back to the global scope. Are questions that have an obvious answer appropriate in responses to someone else? Generally, are these questions considered to be emphasizing the point or considered to be deeming the other person as unintellegible (by breaking down the response to a point where the other person will have no trouble understanding it, due to the obvious answer that can be formed in regards to the posed question)?