The clip is listed with the tags Minecraft and Merl, and its published description frames it as a response to a question related to Minecraft. No clearer source, performer, date or original recording is supplied with it, so its origin is not documented here. It is best understood through its use online, as a short spoken admission that no answer is available, reused where a question is left open. That wording gives it a clear function in Minecraft-related chats, videos and streams, where it can stand in for a reply without adding further explanation.
About this sound
Merl says he does not know the answer to that in this short Minecraft voice clip, a reply for chats and edits when a question has no clear response.
This clip contains the spoken line in which Merl says he does not know the answer to that, presented as a response to a question related to Minecraft. The wording itself is the whole point: a direct statement that no answer is available, set against the expectation that a Minecraft question will get a Minecraft answer. That contrast makes it reusable as a reaction, because viewers recognise being asked something and having nothing to offer. The clip is short, at 6.72 seconds, so it can sit inside a longer exchange without taking it over, while the Minecraft framing keeps it tied to gaming chats and videos.