Daisies and Daffodils, Have Flowers That Serve as Organs of Reproduction

Daisies and daffodils, have flowers that serve as organs of reproduction, leaves that serve as organs of photosynthesis, and xylem and phloem that move water and food throughout the plant. These similarities are best explained by

A) inheritance of acquired characteristics.
B) uniformitarianism.
C) a common ancestry.
D) the "Ladder of Nature."
E) artificial selection.