The sentence that uses Standard English is The boy had grown up very quickly.
Standard English uses correct grammar and vocabulary, and the first sentence doesn't - it should be <em>The boy grew up very quickly.</em>
I feel like kindness can be taught because if someone is mean and you set a good example and they want to be just like you they will start be kind. You can also teach kindness in a classroom by making everyone be nice to have a happy classroom and people will be asking for help and asking to borrow something. I also feel like it matter on the age.
A is the answer because it ends with a question mark and starts with an interrogative word
