Key Points:
1. The sentence describes a shift in attitudes toward the family during the 1960s.
2. Initially, the family was seen as a "worthwhile, stable institution" (positive view).
3. Later, the view changed to seeing it as "oppressive and bankrupt" (negative view), with its dissolution considered "imminent and welcome."
4. The blank requires a word that fits this negative shift in perception.

Eliminating Incorrect Options:
- (A) pretence of $\rightarrow$ "Pretence" means false appearance, which doesn't fit the context of a genuine shift in opinion.
- (B) celebration of $\rightarrow$ This is positive, but we need a negative word.
- (C) censure of $\rightarrow$ "Censure" means strong criticism, which fits the negative shift.
- (D) approval of $\rightarrow$ This is positive, opposite of what we need.
- (E) derision of $\rightarrow$ "Derision" means mockery or scorn, which also fits the negative shift.
- (F) extolment of $\rightarrow$ "Extolment" means praise, which is positive and incorrect.

Correct Pair:
- (C) censure of and (E) derision of both convey a negative judgment of the family, matching the shift described.

Final Answer:
$\\(mathbf{C}\)$ and $\(\mathbf{E}\)$ (censure of and derision of) are the correct choices.