It would be 10
Atomic number = Number of protons
so, 10 = 10
Option D is your answer.
Hope this helps!
Arthur si warm enough ti suportarla lige
This dandelion siphonophore is the first we observed on this expedition. Found at approximately 2,530 meters (8,300 feet) depth, we were able to see the feeding tentacles extended around the animal like a spider web as well as the pulsating nectophores, found just below and around the “float,” which helped to keep the central body suspended.
On the rare occasions we encounter these invertebrates, they appear from a distance as a pulsating, faintly glowing, orange-yellow ball that seems to hover just above the bottom
B, Provide nutritional support to the embryo. It is not D, as the breasts are not part of the female reproductive system. It isn't C because during pregnancy, fetal and maternal blood do not mix. It also isn't D since women do not produce sperm.