If karen and beth are pretty typical of most children, they will have a preference for friends and playmates of

Their sex

Explanation:

The typical or developmentally typically children is an appropriate word to describe the children who do not get any special treatment in school or they get treated as normal children. Normal word is offensive. The special word is used for abnormal children. This is the only norm that is for special children. This has been referred to prefer special children as typical children without any disabilities. They behave properly, function well and even see the children typical as from their age.