Why must parent and child agree on the career choice of the child?

Because sometimes children quickly and inexperienced choose the career, and they are surprised later that this job is not suitable for them, also they have to discuss the career whit their children so they can choose the best career.

Explanation:

The central idea of the passage from "Mother Tongue" is:

A. All forms of the English language are meaningful and purposeful.  

Amy Tan's essay “Mother Tongue” is about the difficulties that a child has to face if it grows in a family in which its parents speak 'limited English.' Amy's mother was among such parent who was unable to speak fluent and proper English. It is through the language that the person is judged by others. Amy was brought up by her mother and because of this, her writing style was much influenced by the language spoken at her home. Her mother taught her that a person's perception of the world is influenced by the language spoken at home.