I should have clarified. I believe it is more likely for a young girl to have sex when there is not a strong father in her life. Single mothers can and often do make sure their children have a strong fatherly role model. But too often the children of single mother just don't have that very important influence in their lives.
I was not speaking about what children are taught about abortion. But the women who wrote the article obviously thought the age of the pregnant girls was a valid argument for abortion. So answering the question of why these girls had sex can go a great deal towards taking that argument out of the pro death roster.
I agree the first conversation you should have before talking about abortion is talking about sex.
Most fathers don't understand that they are their daughters' first boyfriend. How a girl is treated by her dad is the barometer for what she will look for in a boyfriend. When daughters start changing, dad's tend to pull back from all the hugging and physical attention they did when their daughter was little. Girls think something is wrong with them, and they go looking for physical attention from hormonal boys.
Think about it...it makes a lot of sense. Keep telling your daughter how wonderful/smart/beautiful she is and she will look for a boyfriend/husband who does the same!