It is true that many people infected with tapeworms maybe unaware of infection due to lack of symptoms.
If the male is more dominant he can force the woman into having sexual intercourse with him. This can spread HIV especially if the man had been sleeping around.
The answer here is B they are each made of matter. some are compounds, and some are elements they all contain Atoms this is because Silver and Oxygen are elements while Carbon Dioxide and Water are compounds. Although you do not have the choices down, I have come across this question before.
