This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to avoid ectopic pregnancy
Reduce your risk of sexually transmitted infections.
Sexually transmitted infections (stis) such as gonorrhea or chlamydia may increase a woman's chances of having an ectopic pregnancy. If you reduce your risk of contracting one of these diseases, you may reduce your risk of having an ectopic pregnancy as well.

pick from the following.
1). Symptoms of polycystic ovary syndrome include: vaginal bleeding, heavy menstrual periods, high blood pressure, and erectile dysfunction. Limit your activity if you have multiple sexually transmitted diseases.;
2). Limit your number of sexual partners in order to reduce your risk of exposure. Always use a condom during sex to reduce your risk of contracting a disease.;
3). You can cover your vagina while you have your period. This can be up to your partner to prevent the transmission of other sexually transmitted diseases like hiv.;
4). Urine used for urine replacers and blood thinners might also increase your risk for an ectopic pregnancy as well. Purchase hygiene products that contain moisturizers and some antibacterial soap.;
The answer is:
2).