Well, thats a difficult question, because are you specific to just humans or animals? Plus the right answer is based on what you believe. Like if you believe God created everything, then animals were the first to speak, and then humans, well it did not specify in the Bible what they spoke. If you believe in evolution, animals were also the first to speak in their own language, probably through noises and body language
Answer: Who is the audience?
Does immediate feedback need to be gathered? ...
Should there be a written record?
Is the information confidential?
Is the message urgent?
Does the information need to be communicated to everyone in the same way and/or at the same time?
Explanation: might be wrong..
Answer:
what language is this...................,
(✿^‿^)