A、From their childhood. B、During their employment. C、When they get a stable job. D、After they graduate from university. A短文提到，从根

Many of the employees think their career path and plans begin during their employment or when they have already secured a job. But basically, if we look at what becomes of a person, you can root it from the upbringing of the person, to be more specific, from childhood.
    As parents, we usually plan our children’s future according to what we are or what we wanted to be. We buy them toys and educational materials according to what we dream our children would become someday.
    In career pathing, the parents’ role plays a major part for the individual’s success in identifying their chosen career. The best approach is to support the children’s interest and not to force them to take courses that the parents wanted for themselves. Support can be provided by helping them read materials on their field of interest, exposing them to the career and providing information as to the advantages and sacrifices that one may take to accomplish their chosen field. This is not difficult nowadays. The Internet and the publications are now very affordable and even the media provides the information for the different careers that our children may take. There are shows and programs that can provide a picture of the different field. But before you go to your television and change the channel of what your children are watching, check first if the program is fit for their age and maturity.
19. At what stage of life do people start career plans according to the passage?
20. What is the best way for parents to help their children with career pathing?
21. What should parents do before they change the channel their children are watching?