I tend to the support the latter and would elaborate on this in the following paragraphs.
.... the latter part is not necessary and it's anyway implied. The reader expects you to do that in body paragraphs. So, express your view clearly and that's enough.
Firstly, the main reason for learning a language that is alien for students is that they would grasp anything that is thrown at them.
... why do children grasp anything that's thrown at them compared to adults ? Is it their inquisitiveness or free thinking or what? You need to elaborate that point as your reason .
is a known fact that young kids have the trait of absorbing and have a keen observation for things happening around them.
... well, here you are. This is your reason and you should have started the para with this.
I feel you need slight improvements with the structure.