Final answer:
Remarriage in old age becomes more common for several reasons, but it is not more common because remarriage is more acceptable.
Step-by-step explanation:
Remarriage in old age becomes more common for several reasons. However, one reason it is not more common is that remarriage is more acceptable.
In fact, the opposite is true: remarriage is becoming less stigmatized in society. Other reasons for the increase in remarriage in old age include the rise of online dating and the fact that more adults are having children at older ages.