The correct options are
A Girls should be married off immediately after they finish their education.
B Boys are encouraged not to cry in front of others from an early age.
C Technical jobs aren't meant for girls and women.
Stereotypes based on gender start with the belief that only a particular gender has the qualities to do a particular kind of job. Because of the belief in such stereotypes, once a boy completes his studies, he is expected to get a job with good salary whereas a girl is expected to get married.