The most frequently used portal of entry for pathogens is the?

A. skin
B. parental route
C. mucous membrane of the gastrointestinal tract
D. mucous membrane of the respiratory tract
E. all are used equallyThe most frequently used portal of entry for pathogens is the?
D. The respiratory tract. Two open orifices.
I gotta say C. gastrointestinal tract.
We wash dishes, hands, silverware, etc more often then we wear masks or sanitize the air. We wash these things because they touch our mouths. It's incredibly hard to contract something through the skin. Plus, the mucous membrane of the respiratory tract just deposits pathogens into the gastrointestinal tract through cilial activity anyway.
d
The hands, which are covered in skin.It's the most common way to pass along pathogens So keep your hands washed. I wash my hands at least 20 times a day.
I am not sure what "parental route" is but the others are all major ways of infection and would be equally used..it also depends on the type of infection too as some are experts at using digestive systems (eg salomella, camplyobacte) others with repiratory (eg colds, chest infections, flu) while others get in via the skin via wounds/cuts etc (eg tetanus, )...I would be hard pressed to chose out of those 3!