Choose the correct order of steps for the synthesis of vitamin d.

a. inactive vitamin d is transported to the liver where it is modified.
b. inactive, chemically altered vitamin d is transported to the kidneys.
c. uv light strikes the skin and converts a steroid molecule into an inactive form of vitamin d.
d. vitamin d is activated under the influence of pth.

a. d, a, c, b
b. a, c,b, d
c. a, b, c, d
d. c, a, b, d
e. c, b, a, d

D. c, a, b, d

Explanation:humans can synthesis vitamin D as cholecalciferol in the skin when the skin is exposed to ultraviolet-B from the sun.this cholecalciferol is modified to calcidiol in the liver.this calcidiol is then modified to calcitrol in the kidney.parathyroid hormone activates the vit D

where is the diagram?

if you insert the diagram ill be able to you

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.