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You have to say whether you think Language Development is:
a- A special gift
or b- The result of cognitive, social, physiological and neural pressures

That means you have two positions, A or B, and you have to explain one, and say why.
1- Language developmet as a special gift:
Special gift = instinct, that can be supported by saying that children have an urge to speak, and that comes without teaching them how to do that
second proof: comes from children who have been cut off communication or language, even after the age of 6, they can still acquire language, because it is an instinct
third proof: children can produce grammatical strucutres they never heard before, and that means input does not always play a major rule if language is considered a talent, or instinct

2- Language development as emergence
this is opposite to the first view, and you can briefly support it or explain it as follows:
Cognitive pressure: for example, children who have difficulty in hearing, will not be able to acquire language in the same way as healthy children do, so they have to use their other cognitive skills, like depending on sight, or even touch to develop language
- Social pressures: e.g. immigrant children feel pressured to develop their language or their second language based on the environment, parents, caregivers, friends, etc, so that they fit in
-nerual pressures: come from the brain itself, it is equipped to deal with language, it has the mechanism of connectionism, and association, that enables children to deal with language and devlop it, based on input
- Physiologcal: because humans have the necessary organs to produce language, like tongue, lips, lungs, etc.

 
Thank you all for the nice comments and all the best
If you still have any questions about Teaching Methods, do not hesitate to ask.
Regards