In What Way Do Unconventional Parenting Styles Bring About Cultural

In what way do unconventional parenting styles bring about cultural change?

A) Parenting styles do shift, but only relatively slowly.
B) Unconventional methods cannot change parenting styles, because the other methods work well.
C) Parenting styles swing back and forth from one generation to the next.
D) Parenting styles change rapidly and without reverting to previous methods.