The average age at which a woman gives birth to her first child has changed because of a decrease in the teen birth rate and women postponing having children for career purposes.
What is the birth rate?
The birth rate is the rate at which women are giving birth to infants. Before time, the woman gives birth at an early age. Today, women are postponing their pregnancies due to careers. There is a decrease in the teen birth rate, which is decreasing the average birth rate at a certain age.
Thus, the correct option is B, a decrease in the teen birthrate.
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The question is incomplete. Your most probably complete question is given below:
Increase in the teen birthrate
decrease in the teen birthrate
women having infertility problems
change in climatic condition
