Stepfamilies reach the last stage of development: A. after about 7 years. B. just prior to redivorce. C. after the first year. D. after all parents have remarried other partners.

A After about 7 years

Explanation:

RESOLUTION STAGE: The stepfamily now has solid and reliable step relationships; Norms are established and a history has begun to build; the step parent is intimate enough to be a confidante, and outside enough to provide support and mentoring in areas too threatening to share with biological parents.

Experts say this whole cycle takes an average of 7 years, with some families in one or more cycles at a time, and sometimes going back instead of forward.

c. reserves power to the states and people