Which of the Following Is an Example of Primary Prevention

Which of the following is an example of primary prevention?

A) Provide affordable, high-quality child day care for all parents who need it to work outside the home and flexible work schedules to allow parents to spend more time with children
B) Establish well-funded early childhood intervention programs for high-risk children and their families
C) Provide government economic aid for people who cannot find work or who find work but still cannot lift themselves out of poverty
D) Expand "three strikes and you're out" and mandatory imprisonment policies