Question

multiple choice question
in addition to the vitamin k from our diet, vitamin k is also made by:
o the bacteria in our intestines.
o exposure to sunlight.
o the conversion of previtamin substances to vitamin k.

Explanation:

Intestinal bacteria synthesize vitamin K. Sunlight is related to vitamin D synthesis. There is no such major conversion - related way for vitamin K synthesis as described in the third option.

Answer:

the bacteria in our intestines.