One of the advantages of communicating through email rather than through letters and telephone calls is a. grammatical errors aren't major concerns. b. proper punctuation isn't necessary. c. flexibility in terms of sending and receiving messages. d. not having to worry about courtesy or politeness.

C. Hope this helped you out!!

1. b vitamins2. vitamin k3. vitamin d4. examples are walnuts, seeds, tofu5.  total fat, saturated fat, trans fat, cholesterol, sodium, total carbohydrate, dietary fiber, sugars, protein, vitamin a, vitamin c, calcium, and iron.6. 11257. they have to contain reliable information8. less than 10%  9. i didnt read the course so im not surehope that : p