There are various ways in which sex roles and sex-role stereotypes are taught. For example, many adults handle babies differently, depending on【36】they are boys or girls. That: is, they may treat boys more roughly and girls more gently. Adults【37】boys for being strong and girls for being pretty and quiet. They【38】independence in boys and dependence in girls.
These are only a very few【39】of the ways in which our society determines sex roles. The point is that,【40】to what many people think, there can be greater differences【41】members of the same sex than there are between the sexes.
Today, in our society, sex roles are【42】changing. At one time, sex roles and work were closely related. That is, sex determined the work done by each person. The woman's【43】was caring for the home. The man's was working in the outside world.
Today, many women feel that【44】and motherhood are not the only ways in which they can meet their【45】for self-fulfillment. Today, many men wish to spend more time at home with their children. Individuals now have greater freedom in how they live their lives. Work and sex roles are becoming increasingly flexible.
(36)

A. why
B. how
C. when
D. whether