Final answer:
Teenage pregnancy has declined due to increased availability and use of contraception, comprehensive sex education, and societal changes and advancements in women's rights.
Step-by-step explanation:
The decline in teenage pregnancy can be attributed to several factors. One major factor is the increased availability and use of contraception. Contraceptive methods such as birth control pills, condoms, and intrauterine devices (IUDs) have become more accessible and are being used by teenagers to prevent unwanted pregnancies.
Another contributing factor is comprehensive sex education. Teens who receive comprehensive sex education that includes information about contraception and responsible sexual behavior are more likely to make informed choices and delay sexual activity.
Additionally, societal changes and advancements in women's rights have played a role in reducing teenage pregnancy rates. Increased educational and career opportunities for women have encouraged them to prioritize their personal and professional goals before starting a family.