I got to know that dono hito specifically asks about a person while donata is for who in general, so does taht imply to all living beings?Are both used in formal conversations?(If yes, which is preferable?)
どの (dono) by itself is "which". You use どの when you want to select the correct one among three or more options. どのひと is used when you are seeing three or more people and want to know which is the right person.
Kore, sore, are, and dare can be modified by replacing the final re with no to specify an object. It is important to note that kono, sono, ano, and dono cannot stand alone: they must be followed by a noun. For example, if you know that the item in your hand is a watch (tokee) you can say:
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