Which consciousness's functional activity is it to blurt something out spontaneously?

Which consciousness's function does blurting out reveal? Is it the six consciousnesses or the seventh consciousness that is in charge? It is the function of the seventh consciousness, the manas. When He contacts the sense objects, He immediately knows the object-realm and makes a decision, producing a reaction, without allowing the mind consciousness to deliberate further, without the mind consciousness needing to consider further—He makes the decision autocratically and arbitrarily, and the six consciousnesses instantly obey. Afterwards, one may perhaps regret it; this is because after the mind consciousness has analyzed and deliberated, it feels that what was just done was wrong, too rash, and so regret arises.