Vitamin k is synthesized by bacteria in the mouth pancreas large intestine stomach.

The correct answer is- Large intestine

Explanation:

Vitamin K is an very essential vitamin that is required by the body to produce many clotting factors for example clotting factor II, IX, X, etc.  

Green vegetables are the primary source of providing vitamin K1(phylloquinone) and vitamin K2(menaquinones) is synthesized in the body by some bacteria which is present in the large intestine.  

Bacteria such as E.coli are capable of synthesizing vitamin K2 in large intestine from where it is absorbed in lymph present in the intestine. So the correct answer is the large intestine.

the aorta is the large artery leaving the heart branches into smaller arteries, which eventually branch into capillaries.the arteries carry oxygen and nutrients away from your heart, to your body's tissues. the capillaries are small, thin blood vessels that connect the arteries and the veins. the statement that arteries carry oxygen-rich blood to capillaries is true. veins on the other hand are blood vessels that take oxygen-poor blood back to the heart.