The correct answer is A) nuclear family will continue to decline in number.
Many sociologists believe that in the future nuclear family will continue to decline in number.
Sociologists predict this on the basis of the actual way of living and also the way people think about the important things in life for them. A lot of people are prioritizing personal development, their professions, and careers. Marriage is not as important as was in the past. Society is witnessing more and more single parents and they consider this is a family. So yes, it is feasible that the nuclear family will continue to decline in number.