In the developed world, women are increasingly more likely to delay childbirth until their mid- to late-twenties or longer because a. career and educational opportunities are more common b. maternal mortality is more common c. subsistence agriculture is more common d. poverty is more common

The correct answer is option A.  career and educational opportunities are more common.

Explanation:

Nowadays it is more common to see a woman decide first to finish her studies, get a good job and then decide to have children.

In earlier times this was not very common, but it is worth clarifying that before women did not have the same rights they have today.

According to reports, in 2013 it was established that the average age of a woman to give birth is 26 years, and this number continues to increase over time, with first-time mothers starting between the ages of 30 and 40 age.

Nowadays women prefer to be economically stable and have a good education to be able to raise their children well, being that if they do not succeed, they prefer to postpone the act of giving birth for a while.