3. Who is the audience of this article, and why does the author speak to this audience directly?
A The author speaks to teenagers to explain what's happening
in their bodies.
B The author speaks to teachers to understand how to
understand their teenage students.
O C The author speaks to parents to explain what's happening in
their teenage children's body.
OD The author speaks to scientists to help them understand
what else to study about adolescence.

The answer is a hope this

Acquiring english is a way of learning where you learn english by birth, this includes listening to your parents, brothers and sisters and on the whole learning it from the environment around you while mastering standard english need qualified institutes and teachers who make certain programs and syllabus to you master the standard english. this also can include a long session of academic studies before you can master the standard english.standard english is necessary for literary works, official usage and writing materials for standardized publications or when someone needs to speak publicly. in most cases the employers of a company also demand and like the use of standard english from their employees.