Final answer:
The statement 'Family systems theory applies to one generation at a time and focuses on the dynamics in a single generation.' is not a feature of family systems theory as this theory includes multiple generations and the interconnectedness of family members.
Step-by-step explanation:
Regarding the features of the theory of family systems, the option which is not a feature of this theory is: b. Family systems theory applies to one generation at a time and focuses on the dynamics in a single generation. This statement is not accurate because the theory of family systems recognizes that family patterns and dynamics are carried and transmitted through multiple generations. The theory of family systems actually emphasizes the interconnectedness of family members across generations and how these connections influence individual behaviors and the family unit as a whole. It also considers nonfamily members and their understanding of family dynamics to be significant, acknowledges that individuals can learn and create new patterns of behavior, and understands that individuals often react to tension by following behaviors learned from their family of origin. Contrary to the criticized family life cycle model, which is constructed around a sequence of predictable stages and has been deemed too linear, the family systems theory offers a more fluid and dynamic understanding of family that accommodates various family forms and acknowledges the impact of broader social changes.