Who Has the Least Effective Plan for Decreasing the Probability

Who has the least effective plan for decreasing the probability of teenage pregnancy in a school population?

A) Ira, who says, "We need to convince our young people that teenage pregnancy can happen to them."
B) Denise, who says, "Teenage women should be more informed about how difficult it is to be a teenage parent."
C) Afi, who says, "We must do a better job of informing our students about contraception."
D) Dmitri, who says, "To eliminate teenage pregnancy, we must limit access to contraceptives."