Compared to middle-age workers today, the cohorts who have retired since the 1970s had higher social security benefits. were less likely to have pension plans. had wives in the work force. had more elderly parents needing care.

The correct answer is "they were less likely to have pension plans", in the current time, most people have pension plans, because they plan their retirement almost when they start working. In addition, most companies have pension plans as a benefit for their employees and it is very accessible to acquire a private pension plan.