Question

which of the following is commonly affected by stis? a. heart b. lungs c. brain d. kidneys

Explanation:

STIs (sexually - transmitted infections) can cause various health problems. While they can have systemic effects, they commonly affect the reproductive and urinary systems. The kidneys are part of the urinary system and can be affected in some cases of untreated or severe STIs due to complications like kidney inflammation. The heart, lungs, and brain are not the most commonly directly - affected organs by STIs compared to the kidneys in the context of STI - related complications.

Answer:

D. kidneys