Responses

Also probably because K showed results (the first eggs) while other farms were struggling to get anything produced.
So they need mr. A to show other farms how he works his producing magic, (which is literally just treating them with respect and understanding both the human and newly realized animal sides to them.)
What if The government kidnapped Mr. A for G to do something for them (since y'know he's a scientist) that's why he say that A coming back is up to him