It might be C but dont quote me on that
Answer:
Cone cells, or cones, are photoreceptor cells in the retinas of vertebrate eyes (e.g. the human eye). They respond differently to light of different or color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light. Cones are mostly in the center of your retina. They help you see color and fine detail.
Explanation:
Natural selection occurs to give help the best survival chance to the organisms.
Answer:
The blood vessel from lungs to heart is pulmonary vein which carries oxygenated blood.