Step 1: Understanding untreated STDs.
Untreated sexually transmitted diseases (STDs) in women can lead to complications such as pelvic inflammatory disease, abortion, stillbirths, and infertility.
Step 2: Analysis of options.
- Options (1), (2), and (3) are true consequences of untreated STDs.
- Option (4) is incorrect because untreated STDs can indeed increase the risk of ectopic pregnancy.
Step 3: Conclusion.
The statement that STDs do not cause ectopic pregnancy is incorrect, making option (4) the correct answer.