It's C because insoluble fiber is not harmful to the cardiovascular system.
Answer:
Material living conditions(income, consumption, material conditions)
Productive activities
Health
Education
Natural and living environment
It's a pretty common symbol, mostly in the U.S. How ever it is two snakes with a set of wings, this stands for medicine instead of the correct rod of asclepius. I hope in some way this helps.
D. Removing bones and pits from food
Hope this helps! Good luck. :)