Which phrase accurately characterizes sexually transmitted infections (stis)?

a. are caused by bacteria, viruses, or parasites
always cause visible symptoms
are rarely transmitted by sexual contact
can be contracted only by women

The correct answer is option A.are caused by bacteria, viruses, or parasites.

Explanation:

Sexually transmitted infections are a type of infection contracted during a sexual act with a person who is already infected by this disease.

They can be contracted through any type of sexual contact and are caused by viruses, bacteria or parasites.

Among the diseases included in STIs can be hepatitis B, HIV, HPV or herpes viruses. As for bacteria, they can cause syphilis, chlamydia or gonorrhea.

The best way to avoid these diseases would be by not having sex, or having sex always using protection and with a person who has not had any of these diseases.

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