Preparing your study page...
Preparing your study page...
Correct answer: B
Explanation
A is incorrect because the passage counters this by suggesting development depends on attachment quality, not just discipline. B is correct because the final sentence synthesizes the argument, prioritizing relational quality over fixed structure. C is incorrect because the passage presents extended families as one example of structural change, not necessarily a superior model. D is incorrect because the passage discusses fluidity generally and does not make a specific comparative claim about blended vs. other structures.