I believe it would be B. More than a year (Since it is a slow change, and that is the longest amount of time). Hopefully this helps
Answer: The colors you see in flowers come from the DNA of a plant. Genes in a plant's DNA direct cells to produce pigments of various colors. When a flower is red, for instance, it means that the cells in the petals have produced a pigment that absorbs all colors of light but red.
Explanation:
D.
This is so since the average person (with activity) stores enough glycogen to last him 12 to 14 hours.