Large doses of antibiotics given to fight an infection are likely to destroy bacteria that produce vitamin k. in which digestive organ do we find such beneficial bacteria?

a.) stomach
b.) large intestine
c.) liver

C.) Liver

Explanation:  

The majority of vitamin K is obtained from the plant food. It is fat soluble vitamin. It is required by the human body for the synthesis of blood clotting proteins.  The bacteria in the large intestine convert it into a form which can be stored in the body. Some of them are absorbed by the small intestine,  others are stored in fatty tissues and liver cells.      

protist eukaryotes that are not plants, animals, or fungi ("misfits")

the answer would be..

b. sucking